Hey Will Monte , can you navigate throughout the rest of the App Market such as Storefront, Search, to make sure it's not a License/Key issue on your side?
If you can, I wouldn't think it would have anything to do with the update channel but, maybe go into Developer and see what your update channel is. I am currently set to Beta so, maybe try switching it? Just a thought.
Good thinking bro, but unfortunately nope, did everything you suggested and nada/ziltch!