Hallmark Movies Now App Not Working

I subscribed to the Hallmark Movies Now from their website and started using the app on my Apple TV 4k the problem with the app is everytime I exit the app (I am not signing out, just exiting) the app does not retain my logon information the next time I launch the app, I have to re-enter my userid and password. Apple should remove this app from the app store until it is working correctly. Right now I have a yearly subscription that I cannot watch on my primary device.