Im getting class quests for priest when im warlock. perhaps i need to say i deleted a char and created a same name char for a different class.

This is a known issue. You can try the following command if you don't care about your journey entries (those will be deleted):

/run Questie.db.char.complete = {}
/reload

Thanks mate

You should also make sure to update, because that shouldn't be an issue in v4.0.16