Woo! Lots of questions. I'll start from the bottom up.
@Danny1111
Failed to create board is usually a login (check your credentials, disconnect proxies) or another other server error. We are adding a way to differentiate between server & app errors.
@everybody
Account rotation IS on the agenda. Though, it's not that simple. Remember, the beauty of PinPioneer is that it is light, quick and pretty user friendly. Once we start messing around with 1000 different accounts, uploading to & creating different boards it becomes quite messy and more error prone.