1. Ensure your ANT+ USB dongle is plugged in
  2. Close or stop all other applications that using the ANT+ service (such as Zwift or Garmin)
  3. Turn on your sensors
  4. Start RGT, once logged in, on main screen you should see "connected" above each device button

If you do not see "connected" above the buttons:
Click on each sensor button and see if there are any available devices to choose from

If you want to re-scan for your devices, just open the corresponding panel and the scan process will start automatically.