How to fix 'Server error' when changing date of birth on Apple Account?

Re: Error Message on DOB

Wondering just where you have been trying to change the DOB ...

Apple Support provide an article that may be helpful:

Update the birthday associated with an Apple Account - Apple Support

Eg: says:

"You can edit a child’s birthday by signing in to their account on the web".

and:

"Edit your birthday or a child’s birthday on the web

1. Sign in to account.apple.com with the account you want to edit.
2. Select Personal Information, then choose Birthday.
3. Update the birthday and click Save.

If you’re changing a birthday from an adult to a child, 

find out more about converting to a Child Account."

Thank you kindly for your reply, and for providing more info. Sorry I don't know of a sure-fire fix either. However Apple support's article below has a suggestion:

Sign in to your Apple Account on the web or in your device settings - Apple Support

Eg: says:

• "If you try to sign in on your device and it continuously spins or can’t connect to a server, check Apple’s system status page for an outage in your country or region.

If there’s no outage, try connecting to another internet network or try again later".

Thanks brbo, I did go through the account.apple.com however, I stupidly advised her to log out of her account assuming she'd be able to log back in with the new changes. Unfortunately that what a huge mistake and where the error message came from. Now I don't know how to get her account back 🤦🏻‍♀️🤷🏼‍♀️

Hey there brbo, just wanted to thank you again for your time and the extra information you provided. It was very helpful and took me to the support page where I connected with an Apple Expert who was able to fix the issue.

Thanks again.

Madonna 😊

Thank you kindly for taking the time to reply, Madonna, and to let us know.

Your reply may also help others who come here looking for answers.

Good to hear you were able to solve the situation. Cheers :-)