EIN/FIN is the same number. As long as you got your name, address, and social security number entered correctly, the Feds should still approve you, assuming you don't have any other red flags trigger your return. They can easily lookup your employers EIN/FIN. Companies with over 200 employees have a public EIN/FIN number. You may be able to Google it if so.
If not, wait for that W-2 or call your employer or there Payroll Company even.
