You can create more than the 2 free custom pages.
You may want to delete some of the extra custom pages you have added.
1. Go to the custom pages and click on the trash at the bottom right corner of the pages you want to delete.
2. Confirm that you want to delete the pages and select Delete.
Note: If you have added extra custom pages but have not paid for all of them, when a paid page spread is deleted an additional custom page spread will move into the paid slot.