As of 11:30 PM ET on Oct 21, Roblox is currently down for many users. The most recent update from the official status page was this morning, so it is clear the game has been having issues all day.

Roblox is an online platform where network issues are bound to happen ... are experiencing any issues by checking the server status. If that is the case, the issue is from the developer's side ...

Problem reports for Roblox began to surge at around 6:15 a.m. PT, according to site-monitoring service Downdetector. User reports reached just over 7,000 by 7:27 a.m. PT, per Downdetector.