I was downloading some games, and when I came back for others hours later, suddenly after pressing the download button, the downloads didn't arrive. At first I thought it was a Firefox issue, so I also tried Edge, Opera, and Librewolf, and all three had the same problem.
The only method that seemed to work was using a VPN with an IP outside the EU (and I don't know the exact reason why downloads in that region sometimes don't work).