they don’t respond. you have to keep sending letters until something happens.

fastest way would be to contact your congressperson's office, ask them to request USCIS to expedite your EAD processing. I had to compile a copy of the job offer, utility bills, billing statement for how much I pay for rent, medical bills, and a cover letter stating that if I do not get my EAD, it will cause severe financial loss to me as I will not be able to get the job to pay for all the bills attached. My expedite request got approved within a week after they received my evidences of financial loss

Lucia S please when did you case get approved after expediting