RingGo app froze while extending parking, payment made 13 mins later (Code 05u)

Should I challenge this PCN on the basis that the delay in extending my parking session was caused by a RingGo app malfunction?
Would this count as mitigating circumstances, or could Westminster be at fault for procedural impropriety if they fail to properly consider the evidence?

I paid 13 minutes after the PCN was issued — the delay was entirely due to the app freezing, and I have timestamped proof.

PCN Details
Council: City of Westminster
PCN number: WE6339****
Contravention: Parked after the expiry of paid for time (electronic payment)
Contravention code: 05u
Date of service: 30/09/2025
Time of issue: 13:18
Location: Bryanston Street [f6]
Vehicle registration: LD74 ***
Penalty: £110 (£55 if paid within 14 days)

Evidence
Screenshot showing RingGo app frozen (timestamped).
Screenshot/receipt showing payment at 13:31.
PCN (both sides, redacted).

https://i.postimg.cc/wMwQpq4F/Whats-App-Image-2025-10-16-at-13-58-37-2.jpg
https://i.postimg.cc/RZNXvtB0/Whats-App-Image-2025-10-16-at-13-58-37-3.jpg
https://i.postimg.cc/pLjk9n0y/ok.jpg

What time did your first session run out.
What time did you try and extend it.
Where were you when trying and using what device.

1. Around 13:15, according to the app.
2. At roughly 13:13, check the image.
3. I was at a different location (not near car) and device is iphone 12 pro.