On the topic of Roblox, it sounds pretty awful generally. Microtransactions don't (IMHO) have any place in a game for young kids.

In a previous job I dealt with a police request for information after a pre-teenager child sent an email to their school principal saying there was a bomb in the school that would explode and kill everyome unless they were given some number of Robux so they could buy a hat or something for their character.