The OP posted:
I thought i had done my level best to explain.......
I appealed the PCN online within the timescale - I received no acknowledgement.
I then received an NTO, i am unsure of date but confident that my reply was within timescale - I received no acknowledgement.
I then received the Charge Certificate.
OP, we can hardly just disregard the council's PCN timeline. They say reps received 2 Sept, you say 'I am unsure of the date but confident my reply was within timescale'.
Hence why 'how' you made reps has been asked.
NTO posted 26 July, therefore deemed served on 30th(2nd working day), latest date for reps to be served on council was 26 Aug. As this was a Bank Holiday then procedurally you had to have served by Fri. 23rd, which meant posting first-class no later than Wed. 21st.
Council have recorded your reps as 1 week after the latest date.
Hopefully, they'll not disregard.
Remember, they have what you submitted, so they know how and when.