Select a configuration from the list and press the big connect button. Android asks once for VPN permission — confirm it. Once the timer starts and a VPN icon appears in the status bar, the connection is up. From now on the country changes with a single tap, and the same button turns the VPN off.
To avoid picking servers blindly, use our Radar service — radar.rvpn.online: it shows which servers are up right now and how fast they respond (sign in with your VPN login and password).
Tip: test every connection one by one. If the internet disappears after you connect, your ISP most likely blocks the subnet of the data center the server sits in. Remove that server from Happ and from your dashboard and activate a different one instead. Also look into the Routing section: it turns on rule-based mode, where part of the traffic goes directly, bypassing the VPN.