At the time, you held an unexpired Authorization for Special Issuance of a Medical Certificate with a valid medical certificate issued under that Authorization. Special Issuance Medical Certificates are different in that the FAA can, at any time, require that you submit medical information to aid them in determining whether you are eligible for your Special Issuance of a Medical Certificate. If you fail to present the medical information they ask for within the time prescribed, they have the authority to withdraw your Authorization. You failed to submit the requested information within the prescribed time period. They were well within their authority to withdraw your Authorization.
The withdrawal of the Authorization letter invalidates the underlying medical certificate, which you were then required to surrender to the agency, as per your withdrawal letter.
You received a letter from the FAA withdrawing your Authorization for a Special Issuance of a Medical Certificate for failing to comply with 14 CFR §67.401(f)(4). That withdrawal action invalidates the medical certificate and, in accordance with §61.23(c)(3)(iii), revokes your BasicMed eligibility. In that letter, you were also ordered to surrender all unexpired medical certificates issued under that withdrawn Authorization.
The agency overrides the issuing AME. The agency withdrew your Authorization, which invalidated your medical certificate.
You received the letter requiring additional information. You thought you'd be slick, get BasicMed, then walk away from the SI. That's where you ****ed up. You cannot do that when there's a pending request for information. Only once you have resolved that request for information and the agency has determined you were eligible, can you then walk away from the SI once the medical certificate is expired and continue to operate on BasicMed.