I looked into why this might be but I'm not finding any solid answers. Have you had any trouble with other products on Itchi.io? My best guess was the fact that I built this document in Adobe InDesign. I know Adobe has ceased access to Creative Cloud in Russia....but I'm not sure why that would effect a PDF? Very sorry you had trouble with the download! If I can figure out what caused that I'll try and fix it in future updates.