Ok, girls.... I made it.
With a little help of 2 friends it took less than 1 hour. It would be faster, when you make it with 8 players. One at each button and one check and note the lights. So, afterwards all 8 players can directly receive their own individual code.
1.) check the buttons on unranked server; only 3 buttons are needed to light all lamps
2.) type "83980800000" on that keypad
3.) decode the flashing light with the smartphone app "text light" from itunes / apple store to get the individual code
4.) enter a ranked server and wait 2 min to type in the individual code on the keypad
That's all....
It's not that complicated and time-wasting as it seems to be....
Greetz....
