This vid contains info that helps Fix Error Code 2306-0820 while trying to play the Splatoon 2 Global Testfire app.
Description: · You are unable to play Splatoon 2 Global Testfire demo online. · You receive an error message "This service is currently unavailable", when attempting to play online. Players can only launch the demo at any point during the designated 1-hour demo sessions.
Demo Session Times: · Friday, March 24 2017 - 12:00 pm PT - 1:00 pm PT · Friday, March 24 2017 - 8:00 pm PT - 9:00 pm PT · Saturday, March 25 2017 - 4:00 am PT - 5:00 am PT · Saturday, March 25 2017 - 12:00 pm PT - 1:00 pm PT · Saturday, March 25 2017 - 8:00 pm PT - 9:00 pm PT · Sunday, March 26 2017 - 4:00 am PT - 5:00 am PT Please visit splatoon2.nintendo.com/ for additional game info and updates.