Something is not working
Step-by-step diagnostics when the VPN does not connect or YouTube, Telegram and other services do not open.
Go through the steps in order — most issues are solved by the first three.
1. Update your profile
Section titled “1. Update your profile”The app only gets the server list, rules and subscription expiry when the profile updates.
| App | How to update |
|---|---|
| Koala Clash | The update button on the main screen, or Profiles → ⋮ → Update |
| FlClashX | Profiles → ⋮ → Update |
| Rabbit Hole | The icon with four squares → Update |
If updating does not help, delete the profile and add the subscription again from your account.
2. Check the subscription and the device limit
Section titled “2. Check the subscription and the device limit”- In your account, make sure the subscription is active. The trial is limited in both time and traffic.
- If the app mentions the device limit or the connect button switches off right away — see Device limit.
3. Update the app
Section titled “3. Update the app”Outdated versions are a frequent cause of problems. Download the current version from the Install section. If you use Happ or another unsupported app, switch to a recommended one.
4. Switch the server
Section titled “4. Switch the server”Pick another location and check its latency with the test button next to the server. If a specific location has problems, we post about it in the alerts channel.
5. Restart
Section titled “5. Restart”Close the app completely and open it again. If that does not help, reboot the phone or computer, and the router if the whole home network is affected.
6. Remove what gets in the way
Section titled “6. Remove what gets in the way”The VPN app conflicts with other programs that also intercept traffic:
- other VPNs, Zapret, ExitLag and similar tools — do not run them together with our app;
- third-party antiviruses — they can block the app’s core;
- Telegram’s built-in proxy — if Telegram does not connect, open its proxy settings and turn it off;
- “Secure DNS” in the browser (in Chrome: Settings → Privacy and security) and “Private DNS” in Android settings — turn them off if a service does not open in just one browser or only on the phone;
- internet “boosters” and tweaks on the computer — restore the default network settings.
7. Mobile internet
Section titled “7. Mobile internet”If the VPN fails only on mobile internet while Wi-Fi is fine, add the linked profile. If it is the other way round — it fails only on Wi-Fi — the problem is in the network settings: forget the Wi-Fi network and reconnect, and check the DNS on the router and “Private DNS” on the phone.
8. One website, game or app does not work
Section titled “8. One website, game or app does not work”Its traffic most likely goes around the VPN. On a computer you can see this on the Connections tab and fix it with your own rule — see Routing rules. On a phone, tell support which service does not work.
Common errors
Section titled “Common errors”“Xray Core critical error”, “list not found in ghosted.dat”, the core does not start. Update the profile. If the error is in Happ, switch to Koala Clash or Rabbit Hole.
The app shows “0 days” although the subscription is paid. Update the profile — the expiry date only arrives with an update.
IPv6 errors in Koala Clash logs on a computer. Disable IPv6 in the Windows network adapter settings (connection properties → untick “Internet Protocol Version 6”), and on the router too if it is enabled there. Then restart Koala Clash.
Your account does not open while the VPN is on. The protection system may have blocked your IP address by mistake. Turn the VPN off, open 2ip.ru and send your IP address to support@dominants.link — we will unblock it.
I got a notice about torrent usage. See Rules & limits.
If nothing helped
Section titled “If nothing helped”Message support and include right away: the device, the app and its version, the server, your provider (Wi-Fi or mobile), a screenshot of the error and the logs.