Free bays not seen by Mum 74 yo

Hi my mum parked in lodge drive car park N13 and there are free bays but she didn't realise the car had to be in the bays and a ticket must be placed in the windscreen. She got a pcn and I appealed it but the rejected it today. Is it worth pursuing?

https://drive.google.com/file/d/17RF9aQxVT7vtW2Um9gJ6IAVTafxScSDE/view?usp=sharing

heres the rejection letter

What is the PCN number and VRM.

What was your challenge.

Post the PCN.

ok tomorrow thanks

No good without some hard data, so please do as SFM asks, but also read this too, and update your thread accordingly : -
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/

cant find it I'm just going to pay as i dont have the time now