WP Smush Pro Not Registering As PRO

Hello,

I have installed WP Smush Pro via the WPMU Dev Dashboard inside my wp-admin area, but when I go to configure it, it prompts me to register for Pro version - yet the pro version is apparently already installed! I've tried 'Refreshing Status' as well, but with no luck.

Is there a way we can get WP Smush Pro installed properly on my site?

EDIT: Support access is enabled already.

Thanks,
Simon