That is indeed extremely strange... but I'm sure it will get solved sooner or later
sadly there's no way for me to send the files other way as I don't have anything set up for that yet
however here's a few things you can maybe try
- try a different browser
- try your phone or something different then what you already tried on
- try and maybe download the itch app and maybe that works better ( even though I'm not sure if you can download from there but is worth a try