Help: what usually goes wrong

It says connected but nothing changed

On Windows this is almost always system proxy mode, which covers browsers and nothing else. Switch the client to TUN mode and accept the administrator prompt. On iPhone it is usually an old configuration left by a previous app: open Settings, General, VPN and Device Management, remove what you no longer use and connect again.

It drops after twenty minutes on Android

Battery optimization stopped the background service. Mark the client as unrestricted in battery settings, then turn on always on VPN and block connections without VPN in the network settings.

A streaming app still shows the wrong country

Connect first, then open the app. If it was already open, force stop it or clear its data, because many apps cache the region they saw when they started.

The handshake fails instantly

Usually an old client build without full Reality support. Update the client from its own release page. If it still fails, check you selected the profile you just added rather than one further up the list.

The key stopped working

Check the date. Nothing renews on its own here, so a key stops the moment its term ends. The bot shows the remaining time and the terms to top it up.

Still stuck

• Open https://t.me/vpnlab_bot and say what device, what client and what network
• Say what the error text is, word for word if there is one
• Say what you already tried
• A person answers, usually within the hour