basically use the ingame reporting system. i would include both emails being used by you and your son.
for Pc, reporting button is located by hitting the gear symbol top right, go to settings, then report a bug. Mobile, havnt checked for a while, but it should still be under the More button. but its Support. i would use the PC option due to it being easier
Thanks for the answer.
**EDIT** Moderator removed website link.
