so, the most interesting thing is that I bought the licensed version first, and before installing it, as many advised, I deleted the demo and the launcher that was installed earlier. Then I installed the game, and it gave me an error saying that I should reinstall the application. Then I downloaded a pirated version, and that's when I experienced what I wrote about earlier.
Added 2 minutes later
Now I don't know what to do.
There was also an option to delete the "movie" folder from the "Data" folder. It didn't help me, but maybe it will help you...