Problem with suitability declaration form

Not sure if this the right place for my problem but just hoping someone could help.

So I’m applying to uni for sept 25’ and received an interview from Greenwich. I booked an interview and before said interview I have to fill out a “health and sciences suitability declaration form”.

I must have accidentally answered that I have been convicted of a crime which I haven’t. The problem is that I cannot go back to the first page of the form so I’m now a criminal with no way to change it.

If anyone has any ideas on how to help please lmk as it would be greatly appreciated.