RESOLVED. The solution: create a new MySteinberg account using a different email address. If this works as expected (ie. you receive an email with a verification code), lodge a service request with Steinberg Support (if you haven’t already done so). When they finally contact you, ask them to transfer your licence/s across to the new account. From there the re-activation process should work as expected. They probably will have no idea why their system no longer recognises your old account/email. Cheers, David.