I am also facing the same problem.I am able to send and receive MQTT data but when any custom code I am tring to use some unknown characters are inbetween the received data,it breaks the string and partial message is received. If anyone know the method to send and receive the AT command in CMUX enab...

I am facing issue in bulding the example code and run.
It would be appreciated if anyone can help me through step by step guide to run the esp-insight code.
I am little new to ESP eco system,any help would be appreciated.