Free Traffic Legal Advice

So is the error they made in my address not grounds enough to appeal it further? Because as far as I was concerned, if they make an error in your address, the PCN is invalid.

https://imgur.com/a/5nN0lLK  <— PCN and response from council

Thank you in advance to anyone reading this. I entered a school zone at a  prohibited time. I went on the website to initially try and appeal by getting them to cancel out of goodwill but noticed their system wasn’t pulling up my case. That’s when I noticed they’ve entered my address incorrectly on the letter. I’ve had a number of other PCNs mailed to me showing my full, correct address so I KNOW it is up to date and correct on DVLA. Here was my appeal:

I must raise a serious concern about the accuracy of the address used on the Penalty Charge Notice. Although my address is correct and up to date with the DVLA, the PCN was issued with an incomplete postcode. The letter is addressed to SW2 *** rather than SW20 ***. As a result, your website does not recognise the postcode printed on the notice and will not allow me to submit an appeal through the online form. Under the Traffic Management Act 2004, enforcement authorities must serve PCNs to the registered keeper's address as held by the DVLA. This error is not only a failure to accurately address the notice in accordance with DVLA records, but also obstructs my ability to exercise my legal right to respond. I only received the letter by chance. Had it not been mistakenly delivered to me despite the incorrect postcode, I may never have seen it. I ask that this be treated as a procedural impropriety and taken into full consideration when reviewing this appeal. Evidence attached.

I don’t know how the letter even made it to my house with an entire digit missing from the postcode. They only got back to me today, rejecting my appeal and saying that the error must be on my side because they got my address from the DVLA so I must check my address is up to date there.
What’s the best thing to do now?