FasCat app inability to integrate / connect to Whoop

I took advantage of FasCat’s Whoop promotion with the intention of seamlessly transferring Whoop data to the FasCat app. No can do because while FasCat lists Whoop as an option for integration, Whoop does not list FasCat as an option on their app. Am I missing something? I’ve reached out to FasCat and Whoop via email and I’m awaiting responses.