Doesn't work the other way around either. I originally signed up under an old @gmail.com address since that was the first address I used in Android and it held

Doesn't work the other way around either. I originally signed up under an old @gmail.com address since that was the first address I used in Android and it held all my purchases. My family shares the account on all our devices. All of our personal email is under a family Google Apps account. I signed up for family and when I try to accept it tells me it's not allowed for Google Apps accounts. Joy.