What is the correct way to connect a Heroku app with a custom domain?
This is how I did it in the past:
I kept skipping this step because the custom domain already showed up in my Heroku app. Ran this and it started working.
heroku domains:add www.yourwebsite.com
Hint: Want every page to be secure SSL? Use this awesome NPM package https://www.npmjs.com/package/force-ssl-heroku