freezer

I have not been able to play with friends online for over a week. When I click "multiplayer" and "join the game" I get an error: "Failed to connect to the server. Often the reason for this is the blocking of UDP port 20595 by the owner's firewall or antivirus". I can't even go to the server selection. Before that, everything was fine, I didn't change anything. It just started giving an error one day and I still can't play online