There is a pop-up that asks for a review, and it sends to another VERY LARGE game store. It might not be worthwhile to build a variant for GOG, but I don't want to write a review when I don't have a copy. (That did not stop me from making comments on the forum at the other place...)

hah, well that's obviously not ideal. I'll have it corrected next patch. :)

This has now been fixed, you should see it implemented next patch release. :)