Hi, I found the issue with this - I'm a tad late, but I had the exact same issue using Windows 8 mail client and hotmail, internet browser is firefox.
It seems that the semicolons in the link are replaced by "%3b" when the link is opened, putting you on the index page and not registering you because of the broken link.
Replacing these "%3b" instances with ";" fixed the issue for me.
~Auran
It seems that the semicolons in the link are replaced by "%3b" when the link is opened, putting you on the index page and not registering you because of the broken link.
Replacing these "%3b" instances with ";" fixed the issue for me.
~Auran