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1. Log in to heroku.com.
2. Navigate to the appropriate stack (eg bridge-prod)
3. Go to Settings.
4. Scroll down to Config Variables and click Reveal Config Vars.
5. Scroll down to AUTH_PROVIDER and change the value to "stormpath" (or any value other than "mysql"). You can leave AUTH_CREATE_MYSQL_ACCOUNTS alone.
6. Updated value should take effect as soon as you click "Save changes".

Disabling MySQL Auth in AWS

1. Log in to AWS.
2. Navigate to Elastic Beanstalk.
3. Scroll down to BridgePF and click on the appropriate stack (eg BridgePF-prod).
4. Go to Configuration.
5. Go to Software Configuration.
6. Scroll down to Environment Properties.
7. Change the value of AUTH_PROVIDER to "stormpath", as described above.
8. Scroll down to the bottom and click Apply.