Maybe you need to check your internet connection because we don't have a problem to open the site.
His internet connection is not the issue at all as I just created an account and am getting the same error as he is.. and I am from Brazil
Sorry, that was my mistake because I didn't try to register in that site, I only check the site if there is any error or not.
But after I tried to register, I found the error message in that site, and here it is:
So, we can conclude that the website has a problem in the register and some of us say that they cannot log in into that site and that means, the site indeed has a problem.
Maybe the OP can wait for a while, or he can contact the owner or support system to ask about this.
He can find the email by writing the email from the image.