Couldn't find anything about this, so I figured I'd post it here even though I solved the issue.
I tried using the library with a RN2903 and a Teensy 3.2 and I couldn't get it to work because all of the strings were corrupted and creating some other bizarre memory issues. I stripped out all of the AVR related PROGMEM statements and replaced the related functions like P_strcpy with their normal variants (strcpy) and the library works fine.
Couldn't find anything about this, so I figured I'd post it here even though I solved the issue.
I tried using the library with a RN2903 and a Teensy 3.2 and I couldn't get it to work because all of the strings were corrupted and creating some other bizarre memory issues. I stripped out all of the AVR related PROGMEM statements and replaced the related functions like P_strcpy with their normal variants (strcpy) and the library works fine.
Here is the modified code if anyone needs it:
https://pastebin.com/gBdHCAMJ