You can create a Backup Kit at any time, however you must already be logged in to the app to do so. If you do not have access to your RememBear account you can not create a Backup Kit. For more information about what the Backup Kit is and why it's so important, see this article.
Here's how to create a Backup Kit from the app:
Head into your settings, and locate the 'Account' tab. There, you'll see the option to "Get Backup Kit".
Head into your menu by clicking the three horizontal bars, select 'Settings' and click "Create a Backup Kit".
Whether you print your Backup Kit or write down the details by hand, be sure to store it somewhere safe!
Important: You are required to make a note of the Master Password on the Backup Kit yourself, we can’t display it on-screen for security reasons.