Downlink timestamp error!
I try the last firmware and the exemple of nano Lora gateway and TTN
It's OK for Uplink messages with ABP node.
But with Downlink message (APB node) and join reponse (OTAA), I have this error for every incomming UDP message on the gateway from TTN.
--> Downlink timestamp error!, t_us: 4294606989
I have exactly the same behavior you describe.
Downlink do not get messages.
Could you find a solution?