Is anything happening with this as it is still out of action
Even if VS get it to work again it is useless as a tool to register an interest in attending, getting an email with confirmation link and ultimately confirming. it is a dead duck and has not worked correctly for 2 years or more. The rally page is in any case years out of date e.g. I am still listed as a rally assistant despite that role disappearing years ago.
Give up with it and carry out rally business on FB 'friends of MHF'. Get VS to put a notice to that effect on the front of the forum and forget about the 'old MHF' site completely.