Collab post disappeard when i tried to unarchive

Hello,
I tried to archive a photo I posted that was part of a collab. It worked to archived it, but when i unarchived it, the post disappeard and i don't know what to do. I tried to deactive the colaboration account, my account. I even tried to block that account but the post still didn't show anywere.
Can someone help me please?