Hi Izak,
We will be deleting the profiles next week.
Unless your daughter has an active account, the profiles of your grandchildren will be deleted. I know it seems unfair and unnecessary, but having the parent check the box to accept our Terms of Service and Privacy Policy is the only way we can record the parental permission. Otherwise we are just taking your word for it that you have her blessing and full support. That's what we have done in the past, but it's not enough for GDPR compliance.
By the way, I hate to mention this here, but we are still considering whether we need to make the age 16 instead of 13. Strictly speaking for GDPR compliance it appears to the lawyers that it should be 16.
Chris