If you have easy comms turned off, you have to make sure you are tuned to the same radio frequency as the airport you want to land on. for example, if the AB's frequency is 121.800, click on one of the radio button on the Up-Front-Controls(UFC) and scroll until you see an "M" for manual. Hit the CLR button and type in 121.800 and hit Enter. If you clicked the left radio button on the UFC, then you need to the use keybind for COMM1 to pull up the correct comms menu. Same for right radio button COMM2.
P.S. Welcome to DCS.:thumbup: