Can't able to connect end device to TTN network

Hi Everyone,

I have followed the steps mentioned in (Wio-E5 Development Kit | Seeed Studio Wiki ) yet I can’t connect my end device to TTN network. It works good through AT commands, however with custom SDK. I’m not getting the expected result also I’m using STM32CubeIDE and STMProgrammer as mentioned in the documents. Able to build with zero errors yet result is not showing up. Also, can’t able to serial monitor in STM32Cube IDE. Let me know how to connect to serial monitor for SDK custom code. I tried with AT commands it worked good.