An airport subscription is not the same thing as a single proxy node. It is usually a provider-managed HTTPS address that returns a profile containing server entries, proxy groups, rules, DNS preferences, and sometimes client-specific parameters. When you paste that address into Clash, the client downloads the current profile and stores a local copy. The visible result may be a list of countries or node names, but the important object underneath is a complete configuration that tells the Mihomo or Clash-compatible core how to route traffic.

This distinction explains why a subscription can appear to be “imported” while the proxy list remains empty. A client may have saved the URL but failed to download it, downloaded an HTML login page instead of YAML, or received a profile written for a different core. The URL itself is also a credential: anyone who obtains it may be able to retrieve your node list and consume your provider quota. Treat it more like a password-reset link than an ordinary website address.

Most providers deliver subscriptions through an HTTPS endpoint with a long query string. Some dashboards offer separate buttons for Clash, Clash Meta, Mihomo, sing-box, or universal formats. In 2026, the safest general choice for modern Clash clients is the Mihomo or Clash Meta format when your application uses the Mihomo core. A legacy Clash format can still work for basic VMess, Shadowsocks, or Trojan profiles, but it may omit newer transports, DNS options, or rule syntax.

Terminology note: “Airport” describes the subscription provider, not a special Clash feature. Clash Verge Rev, Mihomo Party, Clash for Android, and other compatible clients can normally consume the same provider link when the downloaded profile matches the selected core.

Before importing anything, choose one primary Clash client for the device. Running Clash Verge Rev, Mihomo Party, and an older Clash for Windows installation simultaneously can create competing mixed ports, TUN adapters, background services, and system proxy settings. The symptoms are confusing: one application reports that the profile is active, another owns the port, and the operating system points to a listener that is no longer running. Disable or exit other proxy clients while you complete the first import.

Next, copy the subscription from the provider dashboard rather than retyping it. A single missing character can turn a valid URL into a generic connection error. Check that the address begins with https://, has not been truncated by an email client, and does not include surrounding quotation marks or spaces. If your provider presents a “copy subscription” button, use it. Do not paste the link into public support forums, screenshots, issue trackers, or online YAML converters.

It is useful to identify what the provider promises before troubleshooting the client. Look for the expected format, expiration date, traffic quota, device limit, and update interval. Some providers issue a universal endpoint that detects the requested user agent; others require a format-specific link. If the dashboard lists both “Clash” and “Clash Meta,” choose the latter for a Mihomo-based application. If it lists a “Clash for Windows” link separately, remember that the label may refer to an older YAML profile and not to the current application you installed.

Use the following preparation check to avoid solving the wrong problem:

  • Confirm the client is compatible with the provider’s profile format and core.
  • Verify that the subscription has not expired or exceeded its traffic quota.
  • Check whether the provider limits the number of simultaneous devices or IP addresses.
  • Make sure your computer or phone has a correct date and time for HTTPS certificate validation.
  • Keep a private backup of the original URL in a password manager, not in a public text file.
  • Remove an old profile only after you know the new subscription downloads successfully.

For a first test, avoid changing DNS, TUN mode, rule providers, and proxy groups all at once. A clean baseline makes it easier to decide whether a failure comes from the subscription server, the client interface, or a later customization.

Import the Subscription Step by Step

The exact button names vary by client, but the workflow is consistent. You create a remote profile, paste the provider URL, download it, inspect the result, and activate it. The following sequence applies conceptually to Clash Verge Rev and Mihomo Party on Windows or macOS, with similar labels in other Mihomo-based interfaces.

  1. Open the profile or subscriptions page. Look for a section named Profiles, Subscriptions, or Providers. Do not paste the link into the proxy-node search box; that area is normally for selecting an already downloaded profile.
  2. Create a remote profile. Select Import, Add from URL, or the plus button. Paste the complete HTTPS subscription link into the URL field and give it a recognizable name such as Primary-Airport.
  3. Choose the correct format or core. If the client asks whether the source is Clash, Clash Meta, or a universal subscription, select the option matching your provider and active core. Mihomo-based clients should generally use a Mihomo-compatible export.
  4. Download the profile. Click Import, Download, or Update. Wait for the request to finish instead of immediately switching to the proxy page. A successful download should show a file size, timestamp, node count, or parsed profile status.
  5. Inspect before activating. Open the downloaded profile or preview its details. Confirm that it contains proxy entries and that the proxy groups are not empty. If the interface offers a syntax validation result, resolve errors before making the profile active.
  6. Activate the profile. Select the new profile and click Set Active or the equivalent action. Then open the proxies page and choose a usable group and node. An imported profile is not necessarily an active route until both the profile and a proxy group have been selected.
  7. Enable the required traffic capture. Turn on the system proxy for browser traffic. Use TUN mode only when you need applications that ignore system proxy settings, such as some terminals, games, launchers, or native clients.

After activation, open a normal HTTPS website and watch the client’s connection panel. The panel should show the destination hostname, the matched rule, the selected proxy group, and the final node. This is more reliable than judging success from a colored “running” indicator. A running core with an empty proxy group can still leave every request on DIRECT or fail before a connection is created.

Baseline tip: Test one browser tab and one simple command before enabling TUN. If browser traffic works in system proxy mode, you have confirmed the profile, listener, and basic node path. You can then add TUN as a separate troubleshooting step instead of mixing several variables.

Verify Compatibility and Update Behaviour

A subscription import can fail at several different layers, so read the error literally. “Request failed” may mean the provider domain is unreachable, while “YAML parse error” suggests that the server returned malformed content or an HTML error page. “No proxies found” often means the profile downloaded but uses an unsupported structure, an expired node list, or a client core that cannot parse the provider’s syntax. A certificate error points toward system time, TLS interception, or an outdated runtime rather than a bad password.

Observed result Likely cause Useful next check
URL cannot be reached Provider domain, DNS, firewall, or network path Open the domain in a browser and inspect the connection log
HTML appears instead of YAML Login page, expired link, quota notice, or captive portal Refresh the provider dashboard and copy a new link
YAML parse error Unsupported syntax or damaged response Update the client core and confirm the export format
Profile loads with zero nodes Empty provider response, expired service, or incompatible fields Check quota, expiration, and another official format link
Nodes appear but requests fail Bad node, wrong group, rule mismatch, or DNS issue Test another node and read the matched-rule column

Compatibility is not only about whether the YAML opens. A legacy core may parse the top-level structure while silently ignoring fields it does not understand. Modern subscriptions can include Reality-related options, Hysteria2, TUIC, enhanced DNS settings, rule providers, or script-based behaviour. If the provider advertises those features but your client displays ordinary nodes without the expected transport details, check the core version and application release before editing the profile by hand.

Subscription updates should be scheduled conservatively. Providers may change node names, remove failed servers, rotate certificates, or revise groups. Updating too frequently can trigger rate limits or consume a provider’s API allowance; updating too rarely leaves you with dead endpoints. A daily or twice-daily interval is reasonable for many personal profiles, but use the provider’s recommendation when one is available. After an update, confirm that your preferred proxy group still exists. Do not assume the first node in a newly downloaded list is the best or safest choice.

If the profile works immediately after import but breaks later, compare the update timestamp and downloaded size. A provider may return a temporary maintenance page under the same URL. Keeping a previous working profile can help you roll back, but do not continue using an old profile indefinitely if the provider has rotated credentials or revoked servers.

Manage Multiple Providers Without Confusion

Advanced users often maintain more than one airport subscription: a primary service for daily browsing, a backup service for outages, or a separate profile for travel. The safest approach is to keep each provider as a separate remote profile with a clear name. Avoid merging raw YAML files unless you understand how duplicate proxy names, group references, rule providers, and DNS sections interact. A merge that looks convenient can make updates unpredictable because one provider may overwrite fields belonging to another.

Use names that describe purpose rather than vague labels such as “New” or “Test.” For example, Home-Primary, Travel-Backup, and Work-Isolated make the active profile obvious in a connection log. Record the provider’s renewal date separately, and remove subscriptions you no longer pay for. Keeping dead links increases clutter and creates more opportunities to expose credentials during troubleshooting.

When switching between providers, test the same destination and note the actual result. Compare connection time, stability during a long download, DNS behaviour, and whether the profile’s rule groups match your needs. A node that wins a ten-second latency test may perform poorly on sustained video or software downloads. Conversely, a backup profile may be slower but more stable because it uses a different upstream route. Choose based on the workload rather than a single ping number.

Do not use multiple clients as a substitute for multiple profiles. If you need failover, keep it inside one client where the active listener, TUN interface, DNS engine, and rules are visible in one place. Running separate clients can cause port collisions and makes it difficult to tell which subscription handled a request. If you must test another application, disable the first client’s system proxy, TUN service, and startup helper before launching the second.

Security and Troubleshooting Checklist

Your subscription URL usually grants access to the provider’s configuration endpoint, so protect it throughout its lifecycle. Use HTTPS, avoid browser extensions that synchronise clipboard history to unknown services, and never send the complete link when asking for support. Redact the token, username, and query parameters before sharing a screenshot. If the URL appears in a public repository, chat transcript, or screen recording, assume it is compromised and regenerate it from the provider dashboard.

Download the Clash client from a project release page or a source you can independently verify. A subscription provider can control the profile contents, but it should not require you to install an unrelated executable, disable antivirus permanently, or paste your account password into the Clash interface. The client needs the subscription URL, not the provider’s dashboard password. On desktop systems, grant TUN or helper permissions only to the application you intentionally installed, and review startup items if you no longer use it.

When troubleshooting, change one variable at a time. First test whether the URL downloads. Then check whether the profile parses. Next select a known working node and test a destination. After that, inspect rules and DNS. Only then change TUN mode, fake-IP settings, or custom overrides. This order prevents a common mistake: rewriting a perfectly valid profile because an unrelated local port or permission issue was the real failure.

  • Confirm the active profile timestamp is newer than the previous update.
  • Check the client log for the provider hostname and the exact HTTP status.
  • Verify that the selected proxy group contains at least one node.
  • Use the connection view to confirm whether traffic matches PROXY or unexpectedly matches DIRECT.
  • Test both a browser request and a terminal request; they may use different capture paths.
  • Temporarily disable custom overrides if they changed DNS, listeners, or proxy groups.
  • Regenerate the subscription when there is any possibility that the URL was exposed.

Compared with some all-in-one VPN applications, which can hide the profile format and offer little visibility when a subscription update fails, and older Clash forks that have limited support for modern Mihomo syntax, a current Clash-compatible client gives you clearer control over profiles, groups, rules, logs, and update timing. Clash Official Site is useful in this workflow because its documentation keeps the import path, compatibility checks, security precautions, and practical troubleshooting in one place instead of assuming that every provider and client behaves identically. If you are ready to test your subscription with a current Clash setup, download Clash Official Site and begin with the clean baseline described above.