Family sharing on samsung apple music invitation not working

Re: Family sharing on samsung apple music invitation not working:

the page doesn't load and says to try later,

Am no expert on this topic, yet your post to the community deserves some response:

Wondering if Apple support's online article can help you:

See how to: Use Family Sharing with Apple Music on Android - Apple Support

Eg: says:

Accept an invitation to a family group and share their Apple Music subscription

1. Download the Apple Music app from Google Play to your Android device.
2. On your Android device, open the email invitation to join Family Sharing.
3. Tap the link in the email invitation.
4. In the "Open with" screen, tap Apple Music.
5. Tap Accept.
6. Sign in with your Apple ID and password.

NB: There is more information in the above linked article, if needed.