Have had Netgear and Asus routers and have always been able to view the client list and sort by IP address, MAC, etc.  I don't see anything in the TPLink interface for this router nor on the Tether application that comes close or do anything.  I can't easily find devices without slowly scrolling throught the list which on my computer is in light blue on white background making this even harder.

I even tried copy and paste into a text editor but the results are not very promising.