The DRWI_CitSci.ino, once corrected, is what will go in the src/main.cpp location correct?
The platformio.ini you need is here: https://github.com/EnviroDIY/ModularSensors/tree/master/examples/DRWI_CitSci
I’ve had problems with the python path before, not just with platformio, but with other programs as well. I’ve had to uninstall and re-installed all of python and anaconda several times over the years. It’s not been a huge number of times, but I haven’t ever tracked down the reason it got screwy. I’ve kind-of accepted that as an annoyance of python.