My child can't use the money on their account

Maybe it's because the child's balance has been restricted in the parental settings.

You may want to check this at https://account.microsoft.com/family/.

For billing and purchase issues please contact via chat or by requesting a call back on the following link: https://support.xbox.com/

Please make sure that you are signed in to the account that the funds were credited to.

"Money can't be transferred to another Microsoft account and can't be converted from one
currency to another."

Here's info on how to add money to a child's account at this

link. I hope this helps!

I set up a child account and added money to it but I forgot the password so now I cannot get the child account to log on the Xbox One to be able to use the Microsoft account balance so basically the Xbox One shows the child account but when I click on
the profile to get the gamertag set up on it it wants to password that I do not remember so basically I can't get into the account without a password and I've tried recover it and I still can't recover it is there a way to remove the child account and the
money still be on the parent account

Really, Microsoft account balance method this is like a scam. You transfer money across from a parent account to allow a child account to "buy apps" responsibly - apps owned by Microsoft - and now the balance there is useless because, wait for it, you can't use it. Total waste of money! You can't even transfer the balance to another family account. Hopeless.