Game is restricting people from joining for being "Experimental Mode"

Players are complaining about being unable to join my game due to it being Experimental Mode, yet the game is 100% Filteringenabled. What is happening?

This change was made yesterday for under 13 users. You may have a game that hasn’t been played (like using CreatePlaceAsync) that isn’t reading as FilteringEnabled on the website.

But the game doesn’t even have the “Experimental” logo on the website. It also has been played. War of the Elements - Roblox

Sounds like a bug then. Probably should go under web bugs then.