First, make sure your Courtney Black app is 100% up to date. You can see if you’re using the latest version of the app by navigating to the App Store and checking if you have the option to “UPDATE” the app, instead of “OPEN”.
Next, it's important to note that the free trial is for new customers only. If you have a Courtney Black Subscription already then the option will not show for you.
And finally, if you are still having difficulty, please send me a screenshot and a description of what you are trying to do and how you are doing it. The more detail and screenshots the better!