There may come a time when you need to reset your Heroku server service. Follow these steps precisely to do it.
Logon to the dashboard.heroku.com site. You should see this screen that lists your Echo Speaks App, click on the app.
Click on the Settings button like you see in the green box below:
Scroll to the very bottom of the page and click on Delete App
Copy and paste the name of the app into the block and click on Delete. Now close this screen and go back to your mobile app.
Select your platform to continue the removal/reset process: