The first account used an email address of:
anthonysayers@synamics.com
... and you replied and registered with that one.
The second account used the email address:
anthony.sayers@synamics.com
(notice the dot) and this was rejected.
I cannot tell you how many people register with bad, malformed, incorrect, or otherwise bad email addresses... and we do not have time to response to folks who create these problems (for whatever reason) during the self registration process.
This reply is the exception and the thread will be closed. Email registration works fine with the correct email address is used