how old is your roku streaming stick. some will no longer work with netflix.
I may be beyond help with Netflix. Several days ago Netflix stopped working on all 3 of my TVs All 3 run on Ruku Streaming Stick+ . What happens is when I click on either the remote Netflix button or on the screen Neftix channel is that a black screen comes up with Neftlix in large red letters. I have contacted Netflixt via "chat" and did everything that was recommended including uninstalling Netflix and then reinstalling it. All to no avail then I phoned Netflix's help center and the agent went through everything including unplugging my modem/router (Comcast's) and the plugging it back in. All this was of no avail. They suggested that I contact Comcast which I did. Told the agent just what had been done. He checked the modem and said that it was working okay. After trying everything again he called Netflix and had them try to help me but again to no avail.
I am able to stream everything else including Prime Video movies. So it is my belief that the problem lies with Netflix. I have been with Netflix for a number of years both with Comcast and Verizon without any problems until now.
Unless someone out there has a solution, I guess I will have to cancel my subscription with Netflix. I hate giving up Netflix since I have 8 or 9 series that I have been watching.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic