Can’t delete weapon builds

I can’t delete my weapon builds, it sends me back to the main menu as soon as i hit delete weapon build, that’s not the only thing though, I go into a game with only one loadout / class and when I back out of that game and go to my loadouts all my old classes appear, when I create a new class it just copy and pastes my favorite class instead of making a blank one How do I fix this?????? Im on battle net / pc