MGM+ not showing all shows that are available with personal subscription

I subscribe to MGM+ through Xfinity.  It no longer lets me watch all of the shows that are available through a personal MGM+ subscription (subscribed directly through MGM+ - not through Xfinity).  It also doesn't have a "search" field available so I can search for shows.  This is a change from just a few weeks ago.  I used to watch the series "In the Heat of the Night" through my Xfinity MGM+ subscription, but it's no longer available even though it is available if I log into MGM+ with my personal subscription.  (In fact, the MGM+ on Xfinity doesn't offer any TV series - just Original, Movies, Kids, "Extras", and Channels.)

How do I restore access to all MGM+ offerings on the Xfinity version of MGM+, including a search field?

(To access MGM+, I press the Xfinity button on the remote and navigate to Apps.)