Tips Appreciated Achievement not working

I tipped Moxi enough for getting her Weapon, but the achivement isn’t working. Friend of mine unlocked it when we played together. For me the achivement isnt unlocking when tipping her. Other achivments I already unlocked in BL3. Seems it’s only this specific one.

Were you offline when you did it because that makes it not appear until you’re back online otherwise I’ve no idea buddy I got it alright

I’m always playing online.