My 2 daughters have a Microsoft Account each and each account has their correct date of birth entered (they are 6 and 11)

They have had these account for 6 and 11 years respectively.....approx

When I created them I was not given the option to link them to my account, when I log into the kids accounts I have no way of linking them to my account and I get the following message when I look in my account at Permissions > Kids Accounts > You have no child accounts.

Please could someone help me.

Their accounts are setup to work with Family Safety and everything is OK there but I would like them to be childrens accounts of my account

Thanks

Ben