Earlier quoted context omitted.
Ok, so their homepage design unintentionally omits that pertinent information. I’ve wasted a couple of hours installing a FOSS package for a personal project only to find out one of the most heavily presented features was a paid add-in. Even if it’s bad communication design add not intentional, it feels like a salesey bait-and-switch tactic in that situation, and they probably want to know that.
Which feature are you referring to?
Also, I can't see this approach working. Getting enterprise adoption of a front end framework is almost impossible outside of React, let alone paying for a niche one, and the "contact us" approach is a non-starter.