How to install Proton VPN on Ubuntu

 wget https://repo.protonvpn.com/debian/dists/stable/main/binary-all/protonvpn-stable-release_1.0.8_all.deb

sudo dpkg -i ./protonvpn-stable-release_1.0.8_all.deb && sudo apt update

echo "0b14e71586b22e498eb20926c48c7b434b751149b1f2af9902ef1cfe6b03e180 protonvpn-stable-release_1.0.8_all.deb" | sha256sum --check -

sudo apt install proton-vpn-gnome-desktop

sudo apt install libayatana-appindicator3-1 gir1.2-ayatanaappindicator3-0.1 gnome-shell-extension-appindicator