I found the problem it was my email address, I had used a diffident email for my reregistration.
Now I am having trouble with the order details page, it asks for a state code.
I looked up the state code for Utah and Wikipedia says it's 49 but when I type in 49 and then proceed it gives me this message:
Transaction Registration
Sage Pay Server returned a Status of INVALID
Sage Pay returned an INVALID status. The data sent was Invalid because "3138 : The BillingState format is invalid."
Do you know what the state code for Utah is?