Free Traffic Legal Advice

Yup, that is one of 4 almost identical photos they attached to the PCN online. And they still declined my challenge.
I have only had the decline letter to my challenge, and it is vague where it goes from here hence asking for advice, as Ealing are implying I do nothing and wait for them to send Notice To Keeper.
Also, their website is pretty awful, it skips any detail about what to do with a Notice, then jumps to implying I will have to pay the whole fine before they will proceed with an appeal?
https://www.ealing.gov.uk/info/201180/tickets_and_fines/2945/disputing_a_penalty_charge_notice_pcn

I was ticketed on my own driveway with a Code 62 (wheels on or over footpath).
They attached 4 almost identical photos showing wheels behind the property line.
I responded with a challenge:
"Contravention 62 states "Parked with one or more wheels on or over a footpath or any part of a road other than a carriageway". The evidence photos on the PCN clearly show my wheels on my private driveway and not the footpath. I have been issued this PCN in error."
The council have declined that and their website is a little vague as to how to proceed.
The decline letter states "If the PCN remains unpaid after the end of the period of 28 days beginning with the date on which this Notice of Decline is served on you, we will send a Notice to Owner".
So are they suggesting I ignore it and wait until they take action against me until I have a right of formal representation?
I'd like to know how best to proceed as they don't seem to have a case for issuing the ticket in the first place.
I've been parking on this driveway for over 30 years and neither myself or any neighbours have been ticketed before despite it being a CPZ with wardens out twice a day.

PCN: http://www.death.plus.com/temp/20260127_185228L.jpg
DECLINE: http://www.death.plus.com/temp/20260127_185459L.jpg
DECLINE: http://www.death.plus.com/temp/20260127_185515L.jpg
PHOTO: http://www.death.plus.com/temp/20260127_185544L.jpg
GSV: https://maps.app.goo.gl/tzoN1ZZ76qvo69zUA

Hi. Just asking advice at this stage.
Can anyone help with the exact meaning of "Parked with one or more wheels on or over a footpath" as it is not clearly outlined anywhere I can find. Obviously if the bottom of the tyre is on/contacting a footpath, then thats a contravention.
But what does "over" mean? Tyre contacting road but rest of wheel overhanging, or is there another definition?
Only asking as I got a Code 62 with "evidence" showing 1 wheel completely behind my driveway property line and the other one not pictured.