One of the most common reasons for not being able to enter the video call is if the browser has blocked Camera and Microphone access. To unblock, check out the tutorials for different browsers:
Google Chrome (both mobile and desktop)
First, select the 3 dots at the top right corner of the page
Click Settings then Site Settings
Select Camera and ensure it's set to ON
If "medmeapp.com" is in the Blocked list, select this and choose to Clear & Reset
Repeat steps 4-6 for Microphone
Lastly, Refresh Page
Safari (mobile)
Tip: Please ensure the webpage has been refreshed before moving to the next steps.
Open the Settings app
Tap on Safari, then Camera
Scroll to Camera & Microphone
Confirm that Ask or Allow is checked
Click Refresh Page
Safari (Desktop)
Begin by selecting Safari at the top left corner of screen
Next, click Settings for This Website
Ensure Camera is set to Allow
Ensure Microphone is set to Allow
Lastly, Refresh Page below