I've got the same problem. I attempt to connect to any server but always get the same result. It says:
"Connecting to [iP address]" -> "Connection timed out"
I had to download and run MTADiag earlier found from your other post here: https://forum.multitheftauto.com/viewtopic.php?f=104&t=31668
Ask me any questions that may be relevant.
P.S. Jaysds1 mentioned router settings.. Do I have to port-forward?
EDIT: Just phoned a friend. He told me to disable hamachi when playing. I thought it was going to work, it said "connecting to [iP address]" then "Entering game" (for about 15 seconds), then says "Connection timed out. Code: 03040033"
