If you are having trouble with signing in, or signing up, there are a few things to check.
The "sign in" and the "sign up" pages are easy to confuse (you won't be the first!). If you need to, click the link at the arrow to move to the correct page.
The most common reason you are unable to set up an account is that one in that email address already exists.
If this is your email address, request a replacement password.