My dad invited me onto his family premium account but when receive invite i

[#1]

Not being accepted onto my families premium account

[Bittencourt]

Hi there, and welcome to the Community.

Do you and your dad live in the same address?

If so, I'd also suggest trying to accept the invitation from an incognito browser window, to avoid issues caused by corrupted browser cache or cookies. 

You can also check the link bellow for more information:

https://support.spotify.com/article/family-address-verification/

Note that you can only change Family plans once a year as well.

Keep me posted on how you get on!