How to unmute the camera and microphone

Running into 2 issues. 1) On my laptop, the camera is always off (muted). On the camera icon, it makes no changes on either the 1st or the 2nd click, i.e. the status of the camera remains muted. 2) On the users’ devices, the microphone is muted for all 6 users, and they cannot unmuted it.
Please advise.

Welcome to the forum.

Is this on or on your private Jitsi installation?