Roblox complaint: Deletion of account

I opened an joint account for me and my son so that he could play the games he wants and I can watch him while he’s at the computer to make sure they’re not inappropriate. He wanted to make a game so I downloaded studio and he went at it making a game. We were in thr process of uploading his game that he made himself (8y.o.) and the next morning his account was deleted. I reached out to the moderators at roblox and they’re claiming his game was made to hack other players accounts… that is absolutely impossible. Neither of us are coders and there is no way this exists in his game unless its something that can be added easily from the studio software and was hidden in the existing coding. He has had over $125 canadian in robux on that account so that he could customize his character and upgrade things in the game and they won’t respond as to what happens with the money they’re also taking away from him. The customer service has been absolutely horrendous and you quite literally can’t get answers from them.