No luck I am afraid. It is very odd, I am only having problems with LMIC library, I have other devices which are on TTN V3 with OTAA working just fine, like I said it works fine with V2 and Helium, so I think the code is sufficient, maybe there is something with the timings on V3 which I am missing or some other problem?
BTW here is the raw output of the LMIC debug in the serial when the JOIN is attempted…
and the gateway and the node…
Don’t worry about exposing the keys its a temp test app / node.
I am guessing the “RX timeout” means it never got a packet back from the gateway, but it’s easily in range of 2 or 3 V3 gateways and a V2 gateway.