No luck:
$ pamac install protonvpn
OK

$ protonvpn –help
Traceback (most recent call last):
File “/usr/bin/protonvpn”, line 33, in
sys.exit(load_entry_point(‘protonvpn-gui==1.12.0’, ‘console_scripts’, ‘protonvpn’)())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(etc..)
from proton.constants import VERSION as proton_version
ModuleNotFoundError: No module named ‘proton’