I remember that a point the login process of compat was broken, and developers told they didn't bother any more to correct it. 
I intensively used compat, because the new replace.py is not in the vicinity of my compat version.
But last year there was a problem where all bots were forcedly logged out, and now I cannot use my bot.
Has anything happened since ? Or can you give me any hint, how to begin to solve it on my own?