So I haven't heard anything back from them yet.
The notice date was 30/01
I submitted the online form on 11/02 and got an email confirmation and reference number. The email also says, "Your case will be placed on hold until you hear from us".
The original letter says the £130 charge should be paid within 28 days but also to not pay if making representation.
Lastly, in the letter on page 3 it says in bold, "Representations must always be made in writing" and doesn't mention the online form (which was different to the paper form)
Do I need to be worried or do anything? Today is the 27th day since the notice.