A couple of additional things that may help those struggling to set up a RG191:
-You must update the firmware. If you are struggling to update the firmware, do a factory reset. I had to perform 3 factory resets before the firmware updates worked as per the user manual.
-as @DPI-OAI indicates you need the gateway id as per TTN, you also need to include the gateway key as per TTN
Great to finally have a choice of cheaper gateways in Australia!