Mac needs iTunes uthorised?
So I'm trying to watch a film that I downloaded to my Mac from Apple TV. The film purchased by an apple family member, I downloaded it and it allowed me to watch it offline. However now all of my downloaded films are showing an error message needs authorisation. I have authorised and both via the error message and through account/authorise. It seems to be working with a film that I purchased but isn't working with any films my family has purchased.
Any help would be very much appreciated.
Cheers
MacBook Pro (2020 and later)