Spoiler: LG02 is a dual channel packet forwrder NOT a LoRaWAN GW (even Dragino site now says for LoRa/proprietary use only not LoRaWAN use. Please disconnect from TTN. (Search for LG01, LG02, SCPF, DCPF, etc. and you will find lots of reasons/statements as to why not supported or allowed on the network).