@ahaw021 Do you host your library somewhere? I have been running a pure C LWM2M client on bare-metal ESP32 with satisfying results. The implementation is based on https://github.com/Openhab-Nodes/libWakaamaEmb with DTLS support. I need to explore the possibility to use MicroPython as a base for LWM2M Hackathon. Cheers!

I'm trying to use nano-gateway with loraserver.io but I can not downstream messages just upstream. Can you share if you had the same problem?