回複：485 receipt and FP notice寄丟了，律師不幫忙，怎莫辦?

Do not panic. Call the 800 number and you have cashed check, you can find your application number. You need this number to reach NSC.

It is unusual for both I-485 and FP notice missing. My own I-485 receipt notice was returned to the service center. Fortunately I got my FP notice in a timely manner.

Contact USCIS asap, since your FP notice has a specific time frame (usually about 10 days). They will re-sent your FP notice but not your I-485.