Appeal site wont acept my VRN

The WEB site will let me pay the ticket but not appeal perhaps the appeal site doesn't like the reference number and VRN , I can't put any VRN in the site just states:
"Please re-enter the correct Vehicle Registration Mark. The information currently given is not correct - please re-enter with the correct information in order for your appeal to be logged and processed."

Today I received an Email from: dataprotection@eurocarparks.com with a PDF attachment.
Is this normal behaviour?

Here is the contents of the PDF:

"We are in receipt of your correspondence regarding your PCN. Please be advised you will be contacted separately
regarding the appeal proper.
Your correspondence makes reference to Section 10 of the Data Protection Act 1998; specifically where you
believe you retain the authority to remove consent to process data. In regards this matter we do not uphold your
request on the basis that it does not fulfil the remit as outlined by the Information Commissioners Office
guidelines relating to Section 10. We would therefore refer you to the information provided on the website of the
ICO and the UK Government as below;
https://ico.org.uk/for-organisations/guide-to-data-protection/principle-6-rights/damage-or-distress/
https://www.legislation.gov.uk/ukpga/1998/29/section/10
If you require any additional information please contact the ECP Data Protection & Compliance Department
quoting the above reference either via mail or email at the below address.
dataprotection@eurocarparks.com
Thank you.
ECP Data protection and Compliance"

Thank you.