Unable to watch Paramount + shows

[r0cketscience]

I have two Stream boxes. I can browse the P+ library, and watched shows last week.

This weekend when selecting a show to watch, I get the buffering wheel and no further. Behaviour is the same on both boxes. I've done an app refresh and power cycled, with no change. The P+ app on my Samsung TV works perfectly.

[PaulB1969]

I had this last week and had to re-register on the paramount+ website , which I think I did in the first place ? I had a user ID and password saved anyhow.