Lutris Login Requirement for GOG Game Ownership Verification
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.
Personally I use innoextract on the installer, add the game to bottles or even steam library if I add it to my deck and play. No need to even bother double clicking installers, it's doing the same process of extraction with dumb banners I don't care about.