in 4.14.3 you just need to change iOSEngine.ini from DefaultPlatformService=MCP to DefaultPlatformService=IOS, do not add anything in defaultengine.ini. and be sure to add ShowExternalLoginUI in your blueprint to kick start the game center.
in 4.14.3 you just need to change iOSEngine.ini from DefaultPlatformService=MCP to DefaultPlatformService=IOS, do not add anything in defaultengine.ini. and be sure to add ShowExternalLoginUI in your blueprint to kick start the game center.