There is no need to worry this is clearly a scam. Once you read the entire e-mail you can tell. The end of the e-mail is an entire warning about how they will prosacute because the website as been abused by "fakers" (they used the term fakers in a legal notice)
Also if if were a legitamite page they would not need to warn you, it's just scare tactics into getting you to pay.
I was worried at first but you just have to use some common sense