Paramount Plus on Contour

I am unable to watch Paramount+ shows on my Contour host box (brand new today).On the host box, when I select the episode and choose to go to Paramount+ (watch options), I get an ad, then a spinny circle in the upper left, and that's it. Spinny circle forever or eventually an error code.  I am able to watch Paramount+ shows on the client box. It shows an ad and then the show starts up fine.

Why does it work on the client box, but not the host?