Offhand, if you haven’t seriously changed the basic settings, I doubt your audio problem was a firewall issue. If you use comms security utilities like
Oversight, you may want to make sure they don’t interfere. That said, have you tried the
Zoom Help Center, and specifically the clip on
Joining & Configuring Audio & Video for an answer? The latter addresses adjustment options
within your Zoom window. If necessary, more help on audio and video can be found under
Audio, video, sharing. Finally, it helps to use the latest available version (currently 5.1.0), as Zoom is rapidly developing.
