Make sure in your Account on the web site that it says Perpetual license for the plugin.
They're trying to build a non-ilok auth solution and it's been a bit rough. I wish they'd stick with ilok, but as we all know, there's some real hate out there for ilok. They said ilok is their nunber one support issue.
Also, as with all Korneff plugins, don't forget to click the logo to "see the back panel" of tweaks! Like oversampling, tone shaping, dithering, etc. that go beyond L1.
Finally, Korneff have become one of my favorite plugin developers overall for vibe, replacing Kush for me in all cases (except Blyss) there's overlap. The only plugin I don't have yet is AIP, but I will after the next 50% flash sale.