Shared albums
I’m having trouble getting someone to receive an invitation to a shared album, how can I fix that ?
iPhone 11 Pro Max, iOS 14
Invited subscribers must have an Apple ID. (Note: not an Apple Device, just an Apple ID)
Make sure that the people you are sending have a valid Apple ID /iCloud address using the email address which you have chosen while inviting them to view your Shared Album. Instead, try using a phone number that has iMessage activated as another option if you do know the Apple ID of the person whom you want to share with.