Hello @pmerlin, maybe I didn't got your point very clear.Are you using the MKRWAN as a gateway? Can you describe, in general lines, your system architecture (Like: what is the end device, what is the gateway, what is the Network server...)?I've been using MKRWAN as an end device and I have no major problems with the OTAA Join process. Actually, there is a problem that the modem doesn't answer the "AT+JOIN" untill it receives a JoinAccept, and the MKRWAN.h lib implements a 60 seconds timeout, but doesn't terminate the Join process.On the happy path, everything works just fine.By now, I can tell you that on MKRWAN platform there's no function to generate a JoinAccept message. As my understanding, the MKRWAN is meant to be an end device and therefore sends JoinRequest messages.
The electrical meter is the end devicethe MKRWAN 1300 i want to use as the "server"