"Technologically Orphaned"? More like "Incompetent". They had a programmer who apparently didn't document anything or provide any way for non-programmers to do anything (ie. a unprofessional hack) and no plans as to what to do if this guy gets hit by a bus. I don't know what the revenue, if any, for this site is but it must be close to zero if they can't even put up an ad on one of the freelancer bulletin boards for someone to come in and do some code archeology. Unless it was programmed in something occult like Zug there's got to be a whole community of people versed in the technology involved.
When I work on a mission critical system for anyone my code has is fully documented with at least as many lines of non-jargon, plain English comments as there are of code and I provide a go-to for finding people who can just pick up that code and run with it if I come down with food poisoning or something. Hence hiring me means that you don't run the risk of oblivion due to things like this. (Full disclosure - I have a large financial interest in me.)