Warlock Minion Dysfunction Query

Dear Blizzard folks, I am a level 10 Warlock with a Minion who functioned perfectly. What a great weapon. All of a sudden, the Minion has stopped firing firebolts automatically. I have clicked all the commands but nothing has restored the Minion’s original setting where it zapped enemies who hit me. What can I do?

You have the pet ability toggled to auto cast right?

you either disabled his auto cast (right clicking the abilioty on the pet bar) or set him to passive… check both of those things and adjust as needed