Ah that a shame. Im aware of the widget’s limitations, and that it does not integrate into a real booking system or other OTAs like HomeAway, but it does at least allow a simple pre-built contact form for guests to inquire about availability. I also liked the ability for it to sit up in the header, and then expand when the user wants to interact with the form.
I hope the developers will consider building this into the self-hosted version in the future!