The download page appears broken. At the page:
the button 'Download Now' just reloads the same page, not being possible to access the activiti zip (no errors, the page just reloads itself every time the 'Download Now' button is clicked).
I tried, without success, on a Windows 7 box with different browsers:
- Firefox 57.0.2
- Chrome 63.0.3239.84
- IE 11
Finally, I found it googling and accessing it directly on GitHub: