Refer to the following guide to install and use purchased Element 3D templates.
Unzip the template file you downloaded from VideoHive.
Open the folder and look for the assets folder. In the picture below, it’s the folder titled 'Earth'.
Move the assets folder in to your “My_Models” folder located here: Documents\VideoCopilot\Models\My_Models
Open the .aep file to verify that the template is working correctly.
Be aware that the license for your template may only cover the use of the assets in the template you purchased.