miguelortegaa: What worked for me: signed in with the terminated Apple ID, every contact form looped to the agreement page. The direct URL developer.apple.com/contact/apple-account/ ("Need assistance with accessing your developer account") went through when I signed in with a regular Apple ID that isn't enrolled. I referenced my original case ID and explained why I used another ID. Apple Support replied the next day that the request is under review. Don't enroll that second ID.

GetResubmit: Thanks, helpful. That matches what I've done: the App Review Board appeal form isn't available to a terminated account, so I used the "Need assistance with accessing your developer account" contact form. Apple Support replied on Oct 15 that the request is under review. I'm preparing the chronological record you describe and will provide it through that case when Apple follows up, rather than opening new requests.

Update (day 10): still no response to case 102985280431. I also tried every official channel to appeal, and none of them work for a terminated account: Replying to the case email: it was sent from no-reply. Contact forms while signed in with the terminated Apple ID: they redirect to /register/agree/ and keep loading forever. The App Review appeal form: "Your account can't access this page". "Re-instate a terminated developer program" (/contact/request/app-review/termination/): HTTP 500. I am not asking for special treatment, only for a way to submit my appeal or to learn what I did wrong so I can fix it. If anyone from Apple sees this, I would be very grateful if you could forward my case to the App Review Board. Thank you.