I received discount code from GOG and bought the game. Unfortunately I can see in my library enhanced edition installer version 1.49.8, DLC hellraid installer version 1.34.1 and goodies but no other DLCs. When I go to any DLCs page there is "Go to yuor library / Buy as a gift" notification and on the main page on the game I have tick mark next to every DLC meaning they are bought.

Did anybody experience this problem?

Change GOG language to english and go to the Offline Download page.

For some reason most of the packages are only visible with this trick.