Well it's an network issue or something 😕
Nope, it's an issue with Chrome on Android. Sometimes it makes it so that when you download from Itch, you reach 1+-ish gigs downloaded, then it craps out with a "Forbidden" error. Literally, the error just says "Forbidden". Not "Network Error" as would come up if it were a network error. Android is a little more robust than that with error reports.