I had that same issue earlier. If you just wait a few minutes it should eventually load. Took like 5 minutes but eventually I got the QR code for my FW.
Semi-related: I'm trying to run this Homebrew but it crashes. Is it possibly because I'm using an old version of NinjaHax (1.1b)?
what's the best way to get a newer homebrew exploit on my current setup.
I own a GW, Cubic Ninja retail card and have a Original 3DS with 4.2SysNand and GW9.5 EmuNand.