It may be that you accidentally mistyped the email address. Rmail the user Feather (she's one of our support staff) the email address you intended to use and she'll check whether it matches. :) When you come out of the forums, the Rmail button is on the left under your human avatar headshot.
Also welcome to Res! Let me know if you need help with anything else ^^ I'll be subscribed to this thread so you can either post a reply here or send me an rmail~