Had the same issue and asked this about a month ago all I got was take it to the dealer. I don’t trust the dealers around me to fix this either so here is what I did.
Get a plastic trim tool and put painters tape on it.
Open the drivers side rear door and above the door latch body side behind...
Anyone had an issue with the fuel door rubbing when opening? If so what was the fix. If I put slight pressure to the rear of the door it won’t rub. Looking at pics of the fuel door and pocket assy I see no way of adjusting it.