IME when a manufacturer cuts off a vendor, its because the vendor has not paid for their merchandise in a timely fashion. Or at all.
Possibly complicated by manufacturer getting poor product reviews due to vendors poor performance selling and delivering the manufacturers products.
Slight possibility an individual at the manufactures is running a “ back door” or side gig operation, which often involves long waits for products after ordering, when said said individual gets caught, the back door gets slammed ASAP.
Customers of the vendor are SOL, at least here they’re refunding within 5-7 days. Fingers crossed on that.