Your network (mobile internet provider or WiFi hotspot) might be doing something wonky or block certain file types / file sizes. Hard to say more without more detail.
Thanks for the reply, this is a pretty recent problem that I have gotten a few days ago. Previous to those days, I was perfectly able to download games or files from Itch.Io.
And this was only a problem on Itch considering I had successful downloaded files from different websites.
