In your URL address bar (top right) click on the camera icon when in a call.

Be sure that Always allow is selected

Refresh the page. If rejoining doesn't work, fully quit the browser and rejoin

Click the triple dot Settings icon, upper right of your Chrome window

Click Site Settings > Camera (and then Mic)

Under both Camera and Mic, make sure that app.solidroad.com is not on the BLOCK list

Save changes and rejoin the call

In a call, look at the address bar. Click the cam/mic icon there

Click the "x" to turn off blocking

Exit and rejoin the call. Click Allow when asked, as you rejoin

When opened, select ‘safari’ at the top left of your screen

Select ‘preferences’ and go to ‘websites’.

Click ‘camera’ and/or ‘microphone’ on the left list to change and save your settings to allow access

Exit and rejoin the call. Click 'allow' when asked, as you rejoin

​Make sure to check your macOS System Preferences
To do this, click on the Apple in the top left of your screen and select System Preferences. Click on the Security & Privacy section and then select ‘privacy’. Click on Camera and or Microphone n the list of options, and tick the box next to your browser to allow access.