Yesterday, I installed Toribash, and multiplayer mode was working perfectly fine.
1 hour ago, I played a little, it was still working fine. Now, whenever I want to connect to the multiplayer, it says "not connected", even though my internet is working fine. What should I do?

Did you reach a new belt? If you've move into the next section of belts, if you try to connect to something like a beginner server, it will tell you you're not connected.

Thank you, it was that.
And, by the way, why don't they change that message to something like "your belt is too high for this room" ?

im not sure but when i first joined i didnt know to (5 days ago)