Hello all,
The Lora input use the MQTT Broker.
I consulted the Multitech support, and they indicate to me the correct configuration.
My payload broker was not enabled.
With the configuration bellow, the system back to work properly:
LoRaWAN -> Network Settings -> LoRa Network Server Configuration -> Advance Settings -> Payload Broker -> Port -> 1883.
Click ‘Submit’ and do a save and reboot.