Seems like the xmsims.com website isn't working correctly - when I click on a hair mesh nothing happens. Tried on random pages too, nothing.

Hi! I have this problem too. Here is the solution: All you need to do is right-click on the mesh link and choose "Open link in new window" in your browser so that it redirects you to the direct download link. It will automatically open the Save menu and you can download the mesh. If it doesn't open it on the first try, just hit Refresh. Hope this was helpful! Should have stated this in the upload too, sorry.

Apparently it doesn't work in Google Chrome. I tried it in FireFox and it works.

I used Chrome and this method and it worked. I've had this happen with various other downloads in Chrome so I'm not sure what causes it. It's nice you solved it.