ADP online form character limit

After spending 2 months writing and refining my response to the ADP change in circumstances form, i go to submit it online and find i can only submit 1000 characters per section!! no-where near enough space to say what needs to be said 😞 what do i do, is my only option calling them for a paper copy? my submission deadline is in 10 days, i dont think ill have time if i have to wait for them to post me a new form...

is there a hidden extra space at the end of the form to add extra information? i didnt dare go through the whole form to see in case it submitted it without properly being filled in!! any advice or extra information appreciated