Wont stay connected

This is the only VPN app that wont stay connected for longer than 30 seconds max, and thats if Im lucky. I deleted all other VPN apps and restarted the phone prior to starting this app. Then deleted this app, tried the others one by one, all worked well except for this one. It connects quickly, but thats about it. Tried different countries, different times of day, no difference.

MargitRamirez about PureVPN - Fast and Secure VPN