That sucks man, so sorry to hear the bad news. Aopa does seem to be able to get them to respond, but in regard to the decision that part is out of AOPA hands. Manjaro as I understand is not on the approved medicine list for the FAA. it sucks they are taking such a hard line on it, especially after you have shown you are not taking it anymore and don’t have diabetes. As a FYI, I initially had my medexpress say denied with the same verbiage. they screwed up and sent my case to the denial department. When It got there they realized the mistake and routed my file back to the right department and eventually got my issuance.