You are wayyyy past any "appeal" process. You have received an N1SDT claim form from the CNBC. You must respond to and defend this.
Did you not receive a Letter of Claim (LoC) at least 30 days before the claims issued?
With an "issue date" of 11th September, you have until Monday 30th September to submit your Acknowledgement of Service (AoS). There is nothing to gain by delaying the AoS and by submitting it within the deadline, you then have until 4pm on Monday 14th October to submit your defence.
Apart from the N1SDT form with the Particulars of Claim (PoC), you can disregard all the other forms. You are not required to complete them and should not use them.
To submit your AoS, follow the advice in this document:
https://www.dropbox.com/s/xvqu3bask5m0zir/money-claim-online-How-to-Acknowledge.pdf?dl=0Once that has been done, you can prepare your defence. We can provide the content for most of it and you would only need to add the claimants name [Private Parking Solutions (London) Ltd], your name, the claim number and then sign it by simply typing your name and then dating it. No need to print anything or sign with a pen.
Under no circumstances use the MCOL webform to submit your defence. Not even a comma must go in that box otherwise that will be the sum total of your defence.
Your defence and a draft order will be sent as PDF attachments in an email to
claimresponses.cnbc@justice.gov.uk. Before we get to the defence, looking the claim, you've redacted the location and possibly something else in the PoC.
You only needed to redact the VRM, which you haven't, and the PCN number if it was on there. It is important to see the rest of the PoC as Gladstones have failed to comply with CPR 16.4(1)(a) and there is persuasive case law to get this thrown out at allocation stage.
You have to imagine that you have no prior knowledge of this alleged parking contravention. If the Claim form was the first and only information you had about it, would you be able to provide a defence? Would you even know what the contract you are alleged to have breached is? Would you be able to know what was the term in the alleged contract that the driver is supposed to have contravened? Do you know exactly how much of the sum claimed is the principal and how much is damages or debt recovery costs? Do you know how the interest has been calculated because it isn't allowed from day 1. The list goes on.
Can you also show us a copy of the original Notice to Keeper (NtK) received? You mention that it was originally for "parking in a disabled access bay without displaying blue badge, is that correct? You state you only reversed into the bay and then left immediately. What evidence did they have to prove you were actually parked there?