ayid
if you bought the kosher version (qin f30) then you will not be able to install apps because it's blocked by the manufacturer
only the preinstalled apps are available.
now, someone on Reddit claims that he has the full qin f30 version (with google play) he says he has it for testing, but even he says it's not out yet. so I don't believe you got it from Cellular4less.
if you have the f22 f21 google play version then you should be able to install apps.
if you have the f21 f22 non-google play version (but not kosher) then you should be able to install apk but not all work
so if you have the non-kosher version then please let me know
(if you have the kosher return it promptly...)