Not that I could do better, but you don't launch a beta until at least you can let users create an account. I just went through the sign-up process to create one and I guess it failed to populate server-side or something cuz now I can't login.
Amateurs.<p>This is a gem:
"<i></i> Note: Coinsis is in Beta stage and CANNOT recover PASSWORDS at this time.
Please make sure to write your password down, since currently we cannot help recover your password."