Some colleges do as for the Certification of Finances from International students even before financial aid with acceptance are offered. I’ve not personally known of any, but I have heard that some do.
Make sure that this college requires this Certification of Finances completed even through you have completed CSS PROFILE and need financial aid to meet the Cost of attendance
Fill in your current account balances and get verified copies of parental and your assets. Fill in any other sources of payment of your college such as government grants, loan sources , income. You will have a gap and that gap is hopefully what the college will give you so that you can attend.
It looks to me that the college is asking you how much of the cost you can pay and how much they will have to give you for you to be able to attend that college. My guess is that It does not want to give you an offer of aid that is more than you can scrape up.
If you show you can pay for all of the cost, then you don’t need financial aid.