I´m expiriencing the same problem.
I copied the API-Key from the Client Area to WordPress, but it fails to verify and states: “No recorder found, please check your email and apikey”.
In the Client Area the Status of the Key is listed as “Pending” and I have no idea what that refers to. Is that key not enabled yet or is the connection to WordPress not established due to its failure to verify?
How do I activate the plugin?