I have to say the RAK documentations are written for a seasoned developer with ARM/ ST MCU background.
The whole coIDE / ARM Keil / J-Link / Flash Loader toolchain is particularly painful to configure as there’s not a lot of quality guides/ documentations in the Internet, at least comparing to Arduino IDE and other popular MCUs like NodeMCU, ESP32 and ESP8266.
I know too little about various MCU and development platforms - but is it possible at all to port the whole library and other toolchains to Arduino IDE? That would be awesome.
So much I hoped for a off-the-shelf Lora node - I consumed my whole weekend to get it work and to be honest I still have no clue how to use the J-Link.