I try to register an account, write that "this address is already exist," although I have never registered with this email address, tried to press it, entered my email from which the account was allegedly registered, but already wrote that such an account does not exist
Send us a tweet with your registered email, we can help you out.
I won't trust this site unless the site will be secured. I always doubt that sites and most of them are scam. Quote this post and tell me if the site is not a scam.
The site has a HTTPS (SSL) certificate, it is secured, you do not provide any sensitive data and when you sign up no one can change your email or withdraw "on your behalf" without confirming it via email.