Iv also seen that problem its because that the adventurer does not restart the game. If unsupported bounty´s or keywardens are done then it stops the bot instead of leaving game and creating a new game, and it is truly annoying. Your problem could be the same or it could be the fact that u have not turned off demonbuddy inactivity timer in advanced option.
Anyone have any clue how to fix the stopping of the bot ?