A good way to test things outside of the Hubitat driver to confirm that the ratgdo can in fact open and close the garage door would be to publish in MQTT Explorer
topic: ratgdo/ratgdo-8229/command/door the message open (RAW)
Replace ratgdo-8229`` with your device name (Device Name & Web Config Username``` in the ratgdo web UI)
Verify that the MQTT Topic Prefix is set to ratgdo/
Then send the command open
This will confirm that your ratgdo can open and close the door, that is that your device is compatible with your garage opener and that it's wired correctly.