Hi, there, and thanks for creating this! I think I have registered with the correct key, but visiting the anti-malware plugin page still says Your Installation Key is not yet Registered!. Any ideas? The site in question is the one I registered with.
If the Anti-Malware Setting page still says “Your Installation Key is not yet Registered” then there should also be a pre-filled registration form below that message. The key and the Site URL must match this info exactly so it is best to use this pre-filled form when registering your site. Please try using this form and let me know what happens.
If it still does not work you can email me directly with your WP Admin login info for your site and I will check it out for you.