I've been trying to connect to any random server from both an iPad and an iPhone, inside a wifi using the VyprVPN app. At first the button turns yellow, the message of crunching numbers appear, then the wifi symbol from my devices disappear. Finally the little box turns all grey saying "disconnected" and "no connection". A few seconds later it retries.
The logs only mention "connection start" and then disconnected.
I had tried reinstalling the app, Forgetting the wifi network and reconnecting again, Restarting the router, restarting my devices.
Using an android device works without a problem so I assume is an iOS problem.