Thanks for coming back to me @samusshaun.
If this is a new account, you will need to set up a new self-care account as the one you've been trying to access sounds like it's registered to the former address, where the account was held.
When creating a new account, you will also need to ensure you use an E-Mail address that has not been used as a primary E-Mail address on a former account
The new account should have it's own account number that would be required to complete the registration process
Kindest regards,
David_Bn