Heartbuddy always stop work after a blizzard patch. (each patch of Hearthbuddy is tied to a Hearthstone patch number)
Its a safety precaution to endure your safety if blizz changes something in the game.
Each update of Hearthstone needs to be checked out by Hearthbuddy crew so there isnt any gamebreaking changes
that can compromise the bots behaviour that can compromise your account.
So for your safety it can take 10 minutes to couple of days until bot is up again.
But a 15 mb patch it usually goes very fast to get an update up running