Hallmark + app or on demand

Last week I signed up for Hallmark + thinking I could watch through Xfinity TV apps.  It was a special offer for 6 months.   It turns out that the hallmark no longer is in the Xfinity TV apps.  But they are in on demand.  If I signed up through hallmark can I still watch hallmark + shows through Xfinity on demand?   I know I can watch through the app on my tablet or through Samsung TV apps but I’m old and only watch through Xfinity apps or on demand. Thanks.