Not speaking for OP but I think you need to call and ask for Advantage Customer Service. I've had them quickly sort out issues with paid J upgraded to F on CX before in a matter of minutes. Just explain the urgency and insist the matter be handled over the phone as your qualification depends on it. May want to ask for a supervisor up front but Adv CS can manually post flights.
Speaking from experience, it really is a YMMV situation based on the agent you get. I had an issue due to a CX Y->J issue was that took a FedEx’d letter to fix because multiple agents and sups swore they could do nothing
The best bet it to simply keep trying as several No’s doesn’t mean you aren’t right.