I have the same issue and I sent a message to them, through the contact page.
Today is Sunday, so I will see tomorrow if I get an answer.
I also observed, there is no confidentiality policy or term and conditions, no other information about the author or company that developed this solution.
The website has no SSL certificate, so user and password are not encrypted.
Maybe they are just starting, but the first impression is not very good.
Please consider checking this kind of special offers, before collecting users data.