I had a LOT of problems with Utorrent in 2018.  It was not downloading files from this site.
Out of desperation, I installed it's clone.. Bittorrent.. and that solved the problem!  Bittorrent would download the files while Utorrent would not!

Finally, Utorrent started to download files again, so I have been using that.
Recently, a couple of files didn't download, so I fired up bittorrent again.. but Bittorrent didn't download them either. 
That didn't surprise me.

What DID surprise me is now Bittorrent doesn't want to download files from this site..  But utorrent does! 
This is quite frustrating!

You need to switch to a better Torrent client:  BiglyBT  (search for various posts about it here in the forums)  You can google and download it. It's the replacement of what had been the Vuze project, but under new developer. Totally malware/bug free. Just make sure you keep an eye on the port settings for UDP/HTP and that you have port forwarding/triggering taking place at your router level (and if not then put them in place).

Let us know!

Good luck.