Proton VPN has an install URL that looks a bit different

[MurtadhaInit]

Output of brew config

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Output of brew doctor

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Description of issue

So if you go to the official Proton VPN website and try to download the macOS installer, this is the URL you're presented with: https://protonvpn.com/download/macos/6.3.0/ProtonVPN_mac_v6.3.0.dmg

However, the Cask script here has the following URL: "https://vpn.protondownload.com/download/macos/#{version}/ProtonVPN_mac_v#{version}.dmg"

The domain is slightly different and I wasn't sure if this is worth reporting or if it's even an issue to begin with (a security one).

Relevant casks

protonvpn

[bevanjkay]

The url is the one used by the in-app updater, you can see it in the Sparkle feed here - https://protonvpn.com/download/macos/updates/v5/sparkle.xml

[MurtadhaInit]

Yep, you're right. Sorry I realised this shortly after.