Can't get Netflix to work on my Xbox One

I've had a One for about a month now and I've had Netflix running perfectly on it for the whole time. However, today I changed my Netflix password, and when I tried to enter it on my One, it says there is an error? I know 100% I am entering the correct
information. I've cleared all of my devices on Netflix's website to make sure to I didn't hit a limit and then tried to sign on Netflix on my One again, still nothing. Anyone have any idea how to fix this?

:)

 

Lost the 4k option on Netflix app

I can't find the 4K section either. I have an Xbox One S, 4K TV, and a 4K Subscription to netflix. Everywhere I read says that netflix is ready for 4K viewing on the Xbox One S yet I can't seem to get it to work.

 

Xbox One S HDR issue

My Netflix (in XboneS app) was working fine, then all of a sudden it stopped, now the whole TV just snows out. Amazon 4k HDR works, the Cast Netflix HDR works, but the XboneS Netflix HDR app in breaks my Vizio P65-C1