Account not working on family account ipads



I payed and dowloaded the plex IOS app. My parents are in my family account via the apple store account so they can download the app as well. Everything worked well till the last update. Now it asks to pay again, after I entered my dads plex account so they could connect to my dads plex server, whats going on? the plex iOS app has become unusable, could someone help out?


Gonna try the plex ninja section.