LOL, I think the design is more modern than that, I would say late 90′s at least. 
I know it’s an old theme and I am admittedly a poor website designer, but I am a decent coder and the process of finding and removing malicious code from an infected site is not a simple task.
I am sorry for any confusing or unintuitive content and I assure you that it is not intentional.
Of all your gripes here the one that stands out for me is that my plugin says that your key is not registered. I have checked your account and found that there are actually no sites registered to this email address. I can see that you did register 4 days ago but I honestly don’t know what happened to your registration.
Furthermore, if it’s saying that your key is not registered it should then present the pre-filled registration form so that you can register the key. If it is not showing you this form on the Anti-Malware Settings page in your wp-admin then something is certainly wrong there. I know this malfunction can only affirm you lack of confidence in my plugin and my coding skills but I would like to help you get to the bottom of this. I believe there is a reasonable explanation for this glitch and I know that I can find it and fix this for you if you are willing to give me this chance to redeem myself.
Would you be willing to send me a screenshot of the Anti-Malware Settings page and check the error console in your browser to see if there are any Javascript errors on that page? Alternatively, if you are willing to provide me with a wp-admin login to your site I will check it myself and let you know what I find.
