its very simple to setup.
launch buzztv app and if you are using Mac based server then you enter your portal where it says Mac server
if using user/pass option then you use API option and enter portal and username and password
if using m3u then use m3u option and enter portal and epg or upload hard copy from destination.
heres more info in details by our Mod crazed 9.6
http://iptvtalk.net/showthread.php?41278-BuzzTV-XR4000-XRS4000-some-functions-explained
When entering the username and password slots, use the same 12 digit number (with 3 letters included) for both slots and not your email.
I dont get it?? the code does not have 3 letters, do you mean any random letters ? before or after??