I'm not sure if it's related, but I just woke up to find my bot in combat with a monster, but it wasn't doing anything.
I thought "Ok, I guess it froze"...but then I walked out of the room and back into the room, rested, and started attacking it again.
The only difference was it tried to use skills, but none of them worked, I had a slow autoattack, and the Mana golems hp was still at 6k from when I left the room.
On kill I got the quest item to finish the Nulgath quest, very odd.
I think the server had some problems at some point recently; I closed Le Bot then reopened it and it worked fine.
I can also log into my browser fine..are you typing your password in again or using the Remember Password button?
You may have either typed it wrong, or if it was saved someone at your house might have tried to guess your pass and left a wrong one saved.