As the title suggests, Lutris is requiring me to sign in to GOG so that it can verify my ownership of the game. If my memory serves me well, I used to be able to simply click on the GOG version and then link it to the installation executable file that I downloaded from gog-games.com.
It never used to do that before it just made you add the install files yourself. But yea that is probably what it is doing now.
Are you downloading the game to install, or is it already downloaded and you are installing the game?
Pretty big difference there.
I already have the game installer, I just wanted to use the install script from the app.
My bad, I didn't realize what community we're in.