回複：請PJ老師或其他好心人指點有關I-824

Your case is within processing time of TSC. Push them by call/infopass/write/congress or senate.
Be relax and be prepared for more frustration. I waited for one and half years to get I-824 approved and I have now been waiting for almost another half year to have USCIS deliver I-824 approval to NVC.