I don't know if you figured this out or not. For me Pd-l20rk was not on the MacOS list of applications with permission to access the microphone. Pd-l20rk did not prompt for microphone access for whatever reason. Since I'm on a university machine, my only choice was to open Pd-l2ork via the command line. This worked but now the only way to ensure microphone permissions is to open it via Terminal.
I put the direct path to the executable in the command line:

/Applications/Pd-L2Ork.app/Contents/MacOS/nwjs

@sadielcuentas I don't know if you figured this out yet. I was able to get Pd to work using Andronix with Ubuntu 20.0.4. At first it didn't work as you documented. However, after I ended up installing ubuntustudio-audio it ended up working.
I had to choose "portaudio" in the Media menu then it saw pulse audio as the output. I can only get sound out at the moment. I don't know if input is even an option but at least it works somewhat.
I hope this helps someone.