OK include the LoraCode, make a small function which reads reads and displays the MB140 output. Insert it into various places in the code (begin in setup()) and examine when it stops to work. I guess it is related to the LoraCode which perhaps uses the PWM or changes the settings. Once we know where it stops you can dive into the library to understand why … or you can ask your supplier about PWM availability using LoRA code …
BTW some pieces of the library are .S files for some reason they are making it hard to understand …