Free Traffic Legal Advice

I parked my car at 09.22 on the 21 Jan and paid for a 1hr parking period using the Ringo app. The payment was going through while I raced across to the Doctors for an urgent repeat prescription. I was gone for no more than 3.5mins and came back to my car to find the parking attendant issuing a ticket. I explained I had paid for parking and was literally gone for a few mins. I then looked at my phone and saw an error message with the payment. The ticket was issue at 09.26 so the warden must have pounced as soon as I parked my car. I appealed the PCN including a screenshot of the error message on the payment screen but my appeal has so far been rejected. The screenshot should’ve been sufficient proof of my intention to pay and I as also only gone for a few minutes. Where do I stand with regards to a further appeal?
Thanks

Your duplicate thread will be deleted.

That said, please to have a read of
https://www.ftla.uk/civil-penalty-charge-notices-(councils-tfl-and-so-on)/read-this-first-before-posting-your-case!-this-section-is-for-council-tfl-dartme/

and post here both sides of the unredacted PCN,
  a copy of your challenge (not yet an appeal),
    a copy of their rejection,
      any council photos,
        and a GSV link to the location.


EDIT:
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