That's as good an advertisement for 'iterate' early and often as we'll see around here. Two years of development and that's the first response you give, I guess either you're not the target market or maybe they should have connected with actual users a bit earlier.

So this makes me wonder, was this product developed on the 'they will come' methodology or was there actual end-user involvement and piloting with early adopters during the development phase?

If the latter then you're simply not the target market.

Where I live if you have a property that is 'to let' you contract out the handling of all the details to an agency that manages a large number of properties and you just pocket the cash every month.