Go to ZeroSSL.com and fill out your domain information on the right side. Make sure to use both versions of your URL address. For this example, we used momotarocafe.com and www.momotarocafe.com. Once you have it in there check off the TOS checkboxes and click the next button in the top right corner of the screen. Once you hit next it will take a minute or two to generate your CSR (Second picture below).