Cannot open device with path /dev/hidraw

I got today an Anne Pro 2 and tried to run obinskit (the software for the keyboard). It couldn’t install from AUR (failed validity check), so I run it from the extracted tar. Anyway.

With version 1.1.8 I get a rather general error, but with version 1.1.5 I get the error of the title. I searched a bit and found this that should work (the selected solution).

Is that safe to do? Is there a better way to fix this issue?
I’m not so confident with various linux commands yet and I can’t risk it as this is my work laptop.

A new update to the AUR package released with some changes (something about TAG+="uaccess") and it seems to run without errors.