The developers behind the mega-popular game Roblox are facing a firestorm of controversy after banning a popular YouTuber from the platform.

The user, known as “Schlep,” worked to expose predators on the Roblox platform after himself being the victim of a developer who allegedly groomed him for years, according to his attorneys.

The law firm says Schlep’s actions led to the arrests of six individuals who had allegedly groomed young users on the platform, but Roblox has now banned him from the platform and served with cease-and-desist letters, according to the firm.