If you can't prove it's yours then it's possibly gone for good. Maybe if you could provide other sufficient evidence of it being yours to an admin they might help you out but I wouldn't count on it and account restorations are not a priority not to mention there's quite a few other people still waiting for theirs to be retrieved so it'll likely take some time if at all.
i remember a bit the email, but i still missing something, because i'm not able to use it