If you want to block the Roblox website or app, or prevent Roblox from being downloaded on your Windows 11/10 computer, see this post.

On Roblox, you may block someone in a few different methods, such as through their profile, the chat tool, or by reporting them for unacceptable behavior.

Here's the trick to appear Offline on Roblox on your Windows PC or Mobile Phone and prevent users from communicating with you.