Sorry about that, but the link is for the zip itself, so using that url as a source won't work. (My bad if I gave you that bad info).
If you could download the zip, and put it on a local network share, you should be able to load it that way. I'm not sure how you do that with an ipad though. You can also just try to get the zip file on your device the same way you get other files on the device, then identify the source in Kodi. I'd tell you to put it on a USB stick or something, but that probably won't work for you.