There's a bunch of services that charge to help you with the reinstatement process because they know what keywords to use to help you navigate the Amazon system.

I think they're worth reaching out to (I don't have one that I personally recommend as I've been out of that industry for too long). Because if things haven't changed recently then there's no "penalty" for waiting and the mistake most sellers make is rushing to put through a crappy response and they just make things worse.