PS4 keeps requesting that I enter a Pass Preview PIN in the browser

My PS4 keeps requesting that I enter a “PIN” into my browser. This is a “Pass Preview” PIN. I do that and i work for that session only. When I restart my PS4 I have to enter a PIN again.

My subscription is still valid.

I have already uninstalled the Plex app and reinstalled it.

Not sure if it is of relevance. When I installed the Plex app initially. I did not have a plex pass subscription.

Any advice?

Jason