Just for information, opening the wrong case”Not received” when tracking shows as received,  it is possible that the correct case could then have been opened.

This is similar to the only time a second correct case can be opened, although usually it is where an item has not arrived, but then turns up but is faulty and buyer can then open a Not as described case.

Because tracking showed as delivered, despite the blame for opening the wrong case, was down to advice from ebay, this could have meant that a second case would not have been allowed.