As explained in a Hardware Dev Center article published on October 1, the account verification process began on October 16 and would trigger an automatic suspension from the Windows Hardware Program if partners failed to complete it within 30 days.

“Account verification for the Windows Hardware Program has now concluded,” Microsoft said in a March 30 update. “Accounts that did not successfully complete account verification and received a Rejected verification status have been suspended from the Windows Hardware Program, and submissions from these accounts are no longer permitted.”

Assuming this isn’t a BS excuse and this is really the reason they were suspended, it’s still not a good look that the developers had no way to appeal or contact a human at Microsoft to get their accounts back quickly to the point that they had to resort to social media.