NordVPN updated/fixed this addon. It now works WITHOUT granting private windows access.

Now, if it only had the option to add a custom DNS to the extension like the desktop application can. That would be nice.

A new update from NordVPN -- As others have already mentioned. I can no longer use this addon until I give it permissions to run in private browsing mode. -- No thank you. -- I have un-ticked 'auto renew' Looking to Proton VPN, this is ridiculous. I do not give ANY add-on access to Private Windows.