Along with changing the location, I would strongly recommend locking out people from your game when an incorrect domain is detected. I do not know if there are functional methods which still allow people to play HTML5 games, but there are apparently ways to block redirection from embedded pages. And use other methods of blocking embed too like mentioned in How to detect hot-linking
Above all test! The worst situation is uploading a copy of your game that is not setup correctly and can be pirated. Don’t let others steal bandwidth and ad revenue from you.