To manage your Debutify Theme account settings, you'll need to check first which version of the Debutify theme you are using. From Debutify Theme version 4.10, you can manage account settings in Customize.
Under account settings, you can login and update Debutify account details, and view billing information, and that's where you can also change plans. You can also link to the help center for articles that can assist you with your store, give us feedback or contact the support team for assistance.
How to Manage Theme Account Settings
In Shopify admin, click online store and Themes.
Select your Debutify Shopify Theme, and click on Customize.
Click on Account Settings.