unreal/OfflineMainMenuWidget.cpp (1 line): - line 13: //TODO update with your API Gateway endpoint unreal/OfflineMainMenuWidget.h (1 line): - line 15: //TODO change GAMELIFT_UE4_API to _API lambda/GameLiftUnreal-CognitoLogin.py (1 line): - line 8: # TODO Set to your created app client id. For testing purposes, it is possible to use a hardcoded string here, but please consider using an environment variable.