Error 524, my sons sub account on Xbox live is unable to get online

Hey all, if the account unable to access the game is an underage account then due to the COPPA law it is not possible for underage children to access the online aspect of many titles. Your children will be able to play certain parts of the game such as single player and offline content, which you can set up by following the instructions here: https://help.ea.com/en-us/help/account/give-your-child-access-to-games-on-their-child-account