Cannot move a child account

I am the organizer for my granddaughters account, we are trying to transfer her to her mothers. We have followed the Move a child to another group using Family Sharing – Apple Support (AU). My daughter indicates that my granddaughter is shown as pending on her device. I received and email indicating the requested transfer along with a link that fails with "Cannot view invite, the invite cannot be viewed from this account".

The solution as indicated by all searches, is to approve the request that is found in a notification in the Settings app under my AppleID. The rub/Issue/problem here is that I do not have a notification anywhere under in the Settings app or in Family Sharing or in my AppleID info.

I have signed out of my account and then shut down my device followed by a restart (no change)

I have cancelled all shared subscriptions, purchases and location info followed by the procedure above (no change)

As the attached link indicates problems may also associated with the app request. In our case the app request between my granddaughter and I quit working 6-8 months ago. Can’t view invite to approve family shari… - Apple Community

Now what?