I have uploaded google app java project to production google app engine (from this tutorial), but I can\'t found any information how to stop or disable the production app engine
Late to the game here, the tutorial currently suggests deleting the project, but I wanted to keep the project ID so the suggested option isn't the ideal solution for me.
After spending a good 15 min around the site I've found 2 ways to stop the application. Hope this will be of some help to others until the UI changes again.
Go into App Engine, Settings, click on Disable application.
Go into App Engine, Versions, and then click on STOP.