Adding a family member(newly created member's apple account) on android(Apple Music) doesn't work.

I have a family Apple Music subscription and I'm an apple family initiator(iPhone and other devices). I want to add my relative to my family so that she can listen to Apple Music with my subscription. We had to create a new Apple account using a web site apple.com. Next I sent an e-mail with the family member invitation. The relative tapped the link on her android device(She doesn't have any of apple devices at all). Apple Music opened, we tried to log in with this newly created account, it sort of accepted credentials, but then it said that the subscription to Apple Music must be applied via the website or so... And nothing happened. She wasn't added to my apple family. It appeared as if we didn't try to log in at all - the login screen remained on the screen. She uses Samsung Galaxy S24+. I tried contacting the Apple Support via my phone and they didn't manage to solve this case unfortunately. I suggested to file a bug report. I'm posting this here because I hope Apple's QA will find it and register a bug for this one. I used this article as the help source: Use Family Sharing with Apple Music on Android - Apple Support