Plug the teamtap into port one and run all 4 controllers through there. Make sure it is plugged in when you boot up the game. It should work fine then.
I can see why they did it, but it's not a very forward-looking decision to have people stick the TT into the 2nd joypad port for games with more than 2 players. It only makes sense if the max. possible players would ever be 5, but the device allows for 8 players with 2 TTs... once a game exists with 6 players or more, having players 2 to 5 on the 2nd TT and players 1, 6, 7 and 8 on the first isn't so tidy and would be an issue for the devs to make things seem more logical to the gamers.
It's likely a knock-on from SNES multitaps and Nintendo forcing devs to use the 2nd port for theirs (and never making or certifying a game with over 5 players, although d4s made one a while back with eight).
Ideally, a game that supports 1-5 players should continue the existing precedent set by the released titles bitd (lol, 2 games) and use the 2nd port for players 2, 3, 4 and a 5th, as that's what people would expect. If a game supports more than 5, the devs are obviously expecting a TT in each port and it's up to them to make things sensible and simple for the people sat holding the pads.
Edited by sh3-rg, Wed Jan 14, 2015 3:11 AM.