Support hasn't really been of any help, their standard answer is to factory reset and reconfigure.  I have figured out that that problem has more to do with the Dlink  EBR-2310.  I bought another router and I have no problem pinging any WiFi devices, and now DHCP works properly from my WiFi clients.  Supports standard answer is to reset and rebuild the EBR-2310.  I've done that with no change.  I need to call back to support and see if they can figure out the problem, but it this point I've moved on.
Rick