The linked https://www.kidswebservices.com/en-US/privacy-policy#retention https://www.kidswebservices.com/en-US/privacy-policy#retenti... seems to say they'll

The linked https://www.kidswebservices.com/en-US/privacy-policy#retention https://www.kidswebservices.com/en-US/privacy-policy#retenti... seems to say they'll keep it all for as long as they want, except for "some information" that you can request to be deleted by emailing them - but no detail on what that covers.