OP, I have preliminary general questions(moderators pl forgive me):
1. Do you want help or simply a sounding board for your misguided narratives?
2. If you do, then pl respond to questions and post the documents as requested.
You won't get access to better free advice on the net.
As there are active warrants against your address then your car or any other accessible property could be removed. This is the risk you run on a daily basis. You being on UC is not relevant IMO if you have assets which could be seized to recover the debt authorised by the court.
Time is not on your side.
This is the Congestion Charge enforcement process, NOT the one you say applies:
https://www.londontribunals.gov.uk/ruc/understanding-enforcement-process(others have already referred to your erroneous references to NTOs and our inability to understand your failure to get IN TIME stat decs submitted).
Please read the process before you reply and then compare to your events.
PCN 2 - If issued in respect of a contravention which occurred after PCN 1 was received then I don't think any of your arguments about mis-registration of AutoPay apply because this put you on notice that your registration was wrong* and you could and should have remedied the matter to prevent further 'misunderstandings'. Why you didn't(a no-cost 5 minute online task), I don't know.
But you are where you are because you did not submit a Statutory Declaration in time for each PCN. But there's no dispute that they had your name and correct address, so why did you not make the SDs.
Let's be clear, despite your repeated assertions that it's everyone else's fault, it isn't. We need the full(as far as is relevant) factual account pl. Not one nuanced in your favour.
A timeline is essential.
You set up a CC Business/Personal AP account on?
You are the Account Holder?
The A/C Holder's details are the same as those held by DVLA for the registered keeper of your car?
You placed VRM ***** on this account?
TfL confirmed this how e.g. email etc?
This confirmation to you as Account Holder included a VRM, the problem was(is?) that it wasn't the vehicle that you believed you had supplied;
You did/did not notice this anomaly; and what action did you take to rectify matters?
On *** a vehicle with a different VRM to that on the AP a/c incurred a Road User Charge which was not paid;
TfL issued a PCN to you as keeper(NOTHING to do with your account, they wrote to you as keeper) - PCN 1 received;
Reps made/not made on;
Responses received on ***?
Charge Certificates for PCNs ******* received on; you did what?
Orders for Recovery dated ******* received; you did what?
You submitted out of time Stat Decs on ******; why and what prompted you?
The above need dates and yes/no plus other short responses please. Then we might get a handle on this.