Gears Pro Circuit Online Tournaments and Ladders (operated by MLG):
MLG Live Support (for immediate/urgent help):
http://gamebattles.majorleaguegaming.com/staff/olt/
Gears Pro Circuit Rules, Roster, or MLG Events:
Tournament, Roster or League Ops related questions (via MLG):
leagueops@mlg.tv
MLG Event questions (North American Major Events):
events@mlg.tv
General
Non-MLG event questions (Mexico events, North American Minor events):
gearsprocircuit@microsoft.com
Code of Conduct or Travel Coverage questions:
gearsprocircuit@microsoft.com
General Support (including live broadcast questions and reward inquiries/assistance) :
Official Gears of War Discord chat (via web or phone app) in the #help channel. Make sure to tag the admins!