05/24/2018 (Thu) 17:45:00
Site supplied in OP gives no results. Tried on several browsers. Upload finishes and site acts as if nothing was uploaded in the first place. I tried looking around for some downloadable tools for checking MIME but I couldn't find anything (weirdly enough there were sceenshots of some tools around but couldn't land on any site with programs themselves).
I've uploaded the smallest (9 MB) of the .zips here so maybe you can use that for troubleshooting.
Browser I'm using is Palemoon 27.9.1 (64-bit)