Network Error: No connection.

[patent valve]

My internet is working perfectly fine. I have no VPN. I have no riot vanguard. Windows security is off etc.
I already tried to:
Restart router (multiple times)
Restart game (billion times)
Restart pc (2 times)
Check game files (2 times)
Reinstalled the game
Did whole thing from #known-issues

Nothing helped so far. Log says:
23:34:23.312 - Something went wrong with your PlayFab API call. :(
23:34:23.312 - Here's some debug information:
23:34:23.312 - Error: ConnectFailure (Connection timed out)
(there are multiple logs and they have the same text there)
Edit: forgot to mention that game worked 3hrs ago and than after a break it stopped working.

I just fixed this by deleting the settings folder. It is located here:C:\Users(your windows user)\AppData\LocalLow\10 Chambers Collective

There is a folder called GTFO which I deleted. It will be recreated when you start the game. If you have troubles finding that folder you can hit Windows Key + R and then enter this command:

%appdata%..\LocalLow\10 Chambers Collective
(thanks to reddit r/GTFO, user u/snitem)