Try this option, all the details are in the attachment. Note, the answer is point A(x;y) [red font] on the each graph.
Mix letters, numbers and symbols
Use 8-9 characters
Use a different password for each online account(Maybe)
Yes I got something like that too when I tried to sign up for it.
Check the information you wrote for the demographic page.
Make sure everything is filled in including the social security numbers address/s etc.
Maybe you accidentally put your FAFSA ID in a parent field?
If that doesn't solve it reach back to me and I'll try to help you.