It's no longer necessary to import the registration document as the csv files now comes with quadLegas. Currently you can consult the registration of 2019.3 and 2020.1. Here you can download the standalone linux executable made with pyinstaller at elementary OS.
Executable made with:
PyInstaller: 4.0.dev0+70ce5c5f49
Python: 3.6.9
Platform: Linux-5.3.0-28-generic-x86_64-with-elementary-5.1-hera