I looked for an ATC setting in the settings and couldn’t find it. The only volume I could find it was the COM knob in the cockpit, and VOICES in the settings menu. Tried changing from Azure to Offline but that did nothing. Increased COM audio in the cockpit all the way. That did nothing. I can very faintly hear the crackle of a transmission ending, but I can’t hear the actual transmission.
The only two addons I have are for three airports here in Hawaii.
The only thing I can think of that could have interfered with MSFS other than something in the program itself was an update to windows 10.0.19042.