EAD verification

For some reason both the social security office and DMV has not be able to verify my brothers EAD. He applied for his social 4weeks ago and still nothing. We both have original socials from when we were kids but they can't find him in the system. The DMV said they need more documentation from DHS/USCIS. I had no problems but I find it strange that they can't find him. Has this happened to anyone? Any help would be greatly appreciated! We live in TN idk if that makes a difference either.

Weird. Mine worked right aeay mind im in il