That set of scripts isn't anything Isaac or myself has done (it doesn't even follow our naming scheme, short urls, or UBB urls); we're 3rd party contractors with UBB Systems, if you paid for him to modify your forms that's something you'd have to take up with him as these are not a part of the UBB.threads system.
BTW your footer link is what's sending users to the web root, if the files do exist in the forum directory you'd want to update that URL (I'm assuming it's in the HTML includes section of the Control Panel, but I'm not thinking it is as the contact link
https://www.outdoorking-forum.com.au/forum/index.php?main_page=contact_us loads the portal page, like it would do if a script page wasn't detected).
