I don't know what exTplorer is, but I'll make an ftp account for you.
As far as changes, I'm not quite sure when it stopped working, no one told me until last week. Maybe the biggest change was... I created the form to use bootstrap Tabs template but they decided they wanted it be on one page. So I set it back to use boostrap template but it wouldn't lose the tabs. Multipage was not on in the groups.
So I moved a bunch of elements into the Deliverys group with a couple of groups hidden for certain users, so they got their one page form kinda sorta, although it still shows tabs to admins. Not sure if it's related but short of minor tweaks to titles & group descriptions, a couple of new elements, the changes we made to the Name element filter, I can't think of any changes to that form.