Unable to access camera and/or microphone

Installed Jitsi Meet on Raspberry Pi 4 and ran a few meetings with the same meeting link.
At some point, the microphone couldn’t be accessed. Later, camera too.
Tried different things - reset all the site settings, clear browser history, reload, reboot, start new meetings, etc.
Many of the times, usually the camera came back first, then a list of microphones became visible on the list from the pull-down menu of site-settings. Need to select the right one from there to get the microphone back on.
It has become part of a routine, and more like a game of bingo.
Is there a better way to bring them back? I’m sure they are there playing hide-and-seek.