Ok here comes the whole thing.
My wife has an iPhone, I have an iPad, we share my apple account. She has facebook, I have facebook. She started the gamecenter account on her iPhone. So I was thinking that this could be the reason why the facebook login wasn't working. I changed the name of theamecenter account a few days agoo, thinking this would perhaps help. But it didn't. Yet the game was still working yesterday and this morning.
So this morning I wanna lvl up sending virus. I lvl'ed up from 8 to 9 and activated stoler. But stoler didn't work. Said i should activate it. So I tried again, but it didn't work. I typed exit, closed the app, rebooted my iPad and relaunched the app. It says account not found, then creating account. Was lvl one again and lost all coins...
Set back the username to its origine, rebooted iPad and app, still the same.
Gamecenter nick: Bebexander