Contact and support
Start in the Telegram bot. It issued your link, so it can see what you are asking about. If a message there does not settle it, the support chat at https://t.me/vpnCustomersSupport is the second place to write.
Details that speed up the reply
- The phone model and the Android version
- The app you pasted the link into (it should be Happ)
- What you see on screen when it fails, in a few words
There is no support email address and no phone line, and no reply time is promised.