Can not sign into my Plex from Roku

I was watching my Plex on my Roku this morning, I went to sit down and watch more this afternoon and it told me my credentials were no longer valid. It brought me to a sign in page that gave me a 4 digit code. I went to browser that was signed into my plex and hit the http://plex.tv/link and typed in the code that was on the the Roku Plex. It tells me the Roku device was activated in my browser , but the Roku just keeps telling me Your credentials have expired. Please sign in again. It does this over and over again

There’s another thread with the same issue. A number of people are having this problem.