It sounds like you might have pMD notifications disabled. To receive calls, you will need to turn on your notifications. Please see Where do I update video and audio settings? section above for instructions.
iPhone:
- Go to your phone’s Settings.
- Scroll down and select pMD in your applications list.
- Tap on “Notifications” for the pMD app.
- Make sure “Allow Notifications” is toggled to the right and is green.
Android:
- Go to your phone’s Settings.
- Select “Apps & Notifications.”
- Select pMD in your applications list.
- Tap on “Notifications” and ensure “Show Notifications” is toggled to the on position.