Go to App Admin -->InstaPlus Shoppable Instagram--> Product Page
Open it and you will see below options there,
1. Change the Layout --> To change the layouts
2. Rows --> To select rows per page
3. Grid Margin--> to set margins
4. Embed Heading, Style & Position--> to set heading, heading style & heading position
5. Pop Up settings--> to get an option of Shop button CTA, Show Avatar, Shop pricing
7. Font Family -->to set the font family
8. Product Page Gallery Embed Code --> Put this code to your product template where you want to display insta feeds.