Hello, I own the DLC of Stellaris called Apocalypse, but when I install the game it does not seems to be in the DLC list even though I own it, it even appears in my order history and my library.

I would like to know if you can help me with this problem.

Thank you.

Here for another post, but just in case it's useful... does this help?

https://www.gog.com/forum/general_beta_gog_galaxy_2.0/how_do_i_get_galaxy_20_to_install_dlc_i_bought_where_is_the_dlc_overview_anyway