I have appealed online on 21/5 and got a confirmation email and again queried this online on 28/6 and got a confirmation email.
Pl explain 'again queried this online on 28/6 and got a confirmation email.'. Where is this email?
Working backwards, you submitted an appeal online on 21 May. If they received this then any reply would probably have been around 2 weeks later, let's say 4 June. Their rejection would have allowed you 28 days in which to submit an appeal to the adjudicator which would bring us to 2 July. Only after this date could they serve a CC.
The CC is dated 1 July. Very tight.
And yet your post suggests they did receive and reply, but pl confirm. Even better, get on to the council website and look at your PCN history. Better still, just post the PCN no. and your VRM.
As regards the CC, there's no prescribed form just very limited contents. Although I can see their c**c-up I cannot see anything materially different in the requirements of the 2 pieces of legislation.