This Past couple of days with homebrew have been kicking my ass, what with QR codes not working and my 3DS - for some reason - not being able to connect to my internet at home but connects fine everywhere else. . .
My what big 16 bytes you have grandma
To fix your home connection issue, you might wanna start with what model of a router it is. Crapcast or Verizon, and if you're using a forwarding router (Otherwise known as using another router connected to the main one supplied by your telecom)