Same problem here, too. It's random when these times happen and it doesn't matter the browser used, different computers, clearing caches / history / everything even. It just stays hung up after clicking the download button with nothing happening.
Same with trying to start any trainers. It just sits on the splash screen forever, even with offline keys in the same folder.
HAR file attached in a zip since it could not be uploaded on here directly.
Thanks Brian, I have submitted this file to Akamai for further investigation. It might be some setting or extension we have installed on our server which can be tweaked. One thing I would like people to try if they have this problem is using a VPN for some other part of the world and see if it resolves the issue. That will help us determine if this is somehow geo-related or maybe tied to a specific datacenter. Thanks.