I had to reinstall FSX and then UT2 but after installations are completed there wasn't any exe.xml file so I had to manually install the lines for UT2Services.exe with it. I ran FSX but it didn't ask me to put UT2Services.exe to trusted files so UT2 didn't start. I checked my fsx.cfg and UT2 aircraft location is there but UT2Services.exe is not in the trusted dll part. I started UT2Services.exe and traffic appeared. I didn't have this problem when I first installed it. Seems I have to manually open it now. Anyone know a fix for this?

I fixed my problem. It was the wrong configuration of the file location in exe.xml. I removed the path so it only shows inside FSX folder.