Complicated Address Change for Approved Green Card

In these days, my green card got approved. But USCIS did not have my updated current address. I ever called them for address change as well as online updating address two months ago. But it seems that they still have my previous address. I heard that within 45 days USCIS could not update the new address twice. I ever called them for address issue. It seems that their computer system could not change it now.

What shoudl I do? Pleaes advice. Thanks!