So, the problem was that we needed to add multiple domains (and their corresponding SSL cert) to a single Heroku app, they provide a guide at the bottom: https://help.heroku.com/8P5TVA4T/how-can-i-configure-multiple-ssl-certificates-for-a-single-app But won’t provide you with the steps to generate it. You first need to install certbot on your local machine, I’m on macOS so Homebrew is highly […]