fafsa

I apply for FAFSA application and submit all the document and after I began my study in college and my college send me to say that: Your financial aid application has been denied for the following reason(s):
The Department of Homeland Security has not confirmed you as an eligible non-citizen.
I want to know what I can do in this case I have a conditional green card for two years. and I am eligible for FAFSA website

You need to take your green card to the FA department at your school. They need to physically see it. They will then be able to confirm you eligibility.