Hi,
I to had issues getting the TP-LINK-WN722N working on Net Hunter.
I have installed Net hunter on my nexus 6 xt1100.
It took me ages to figure out why the little green light was not coming on the wifi card I had connected to my phone via the OTG cable.
Then I figured it out, Duh!!! All that time.....this is how I got the card to be recognized and work, lol
ifconfig wlan1 up (as in wlan1 is the name of the external wifi device added via OTG cable)
Now sometimes and i do mean sometimes, wifite does not work straight away, its like it has issues putting the card into monitor mode, so i basically give a nudge by running airodump-ng wlan1, i then stop airodump-ng and run wifite and it works.
wifite is very effective against routers with a railink chipset. (as in under 1 minute to crack wpa)
anyway hope this helps..