I think this was a result of my inventory being in overflow. However, once cleared the question marks do not go away. I tried exiting the game, clearing cache. Nothing clears it. Very annoying. Made a ticket, but was told to post the problem here.
Question marks? Are they small, green and purple, and disappear? Try checking you style tab, accessories. If you don't have the accessories style locked, collecting the E Nygmatic accessory from the Batman Anniversary 2020 gift would have auto equipped.