We currently developing new system of the multiple search engine starting from v1.1, it will have admin panel, userplaylist and more...
We hope that you have received your email and the product code. Firstly, you need to register in this website. Use the paypal email during registration. After that, activate your account by link sent to your email. Then, login to your account, click register a new product, enter the code you received from the first email. Then, click on my account again to see the download link of the product. =)