General questions
No, it isn't! You don't need to register to play in a server!
A lot of features are not working, that's because ultrapowa is on an alpha stage!
No, I'm sorry but currently it isn't.
Don't worry, you've not lost your village, you're only playing on another server, to come back to your village in official server you can easily click the fist element of the list and then load your camp through google plus! Official Screen
Problems using the App
Don't worry, there are usually two kinds of errors, you can identify them by reading the exit code. The most commons are:
  • 127: There app is unable to launch the command cp, as it is not found on your device, you can easily solve it by installing BusyBox.
  • 1: Is a generic error, I'm sorry but I actually don't know how to fix this, some user reported me that editing /etc/hosts file permission to rw with a root browser did the trick, you can try :)
  • Error 1 also appear if you're on Lollipop, I'm sorry but the app is not yet working on it...
I'm sorry but actually you can't, I'm working on a new version where you can create your own list, but since I'm a bit busy and I actually work all the day it'll take some time...