Since it seems that multiple people are starting to have this issue, I figured it would be good to get all of these reports in one thread in case DirecTV decides to take a look here.
Basically, the issue that is a new activated receiver will not be listed in the DirecTV iPad and iPhone app and GenieGo apps will not list the PlayList for the receiver. It appears that the deactivated receiver is still listed in the apps as well. On the DirecTV website, the new receiver is listed correctly, however, it will state that it is not connected to the Internet.
If you are having this issue, post here in this thread. To help out, post the full model number of the deactivated receivers and the new receivers.