My employer Id is only 7 letters long and wont let me continue because its too short. what do i do?

Assuming you are referring to the Employer Identification Number (EIN) in Box b of your Form W2, it must be 9 numbers.  You will need to reach out to your employer for the correct numbers if that is the case.

If you are referring to something else, please clarify so that I can assist you further.