Why am I not receiving SMS messages on other devices?

Follow this procedure:

  • open the Join app on your Android device
  • open the Navigation Drawer on the left (click on the little hamburger icon in the top left)
  • touch Settings
  • touch SMS
  • make sure SMS Service is enabled
  • make sure the devices you want to receive SMS messages on are selected under SMS Devices

This should make SMS messages appear on remote devices.