I send my husbands I-765 along with his I-485 packet and it was sent back because we forgot to check a box Oops!

I sent a new form back to them in Chicago and they Received it December 6th and cashed our money order on December 15th, but we have still not received any kind of receipt notice.

Has anyone had this happen. The receipt notice for our other forms came within two weeks of mailing.