I'm successfully connecting to a Mac (OS 10.14.6) from a windows 7 PC, I have full access and remote control but I can't hear any sound, I obviously checked all the option (play sound of the computer) in both machines. The mac is using a Black Magic UltraStudio Express card, but I tried using as well the internal speakers output. I can succesfully connect with audio on another win7 machine. Video is working fine and I have full access to the Mac.
In the top window settings in the session the option Communicate/computer audio is greyed out, I can't change it.

I'm using the last version of Teamviewer on both sides.
I absolutely need to use remotely that mac to edit video
PLEASE HELP!