Before you can create a custom app for your store, you need to enable custom app development. You need to be the store owner or a staff member with the Enable app development permission to enable custom app development.
After you've set API scopes for your app, you can install the app. You'll get your API access tokens after you install. Depending on what API scopes you assigned to the app, you'll get an Admin API access token, a Storefront API access token, or both.
You can check the Storefront access token, the API key, and the API secret for a custom app from the app's API credentials page. You can also check the Admin API access token, but after revealing it once, you can only check the last four digits of the token.
Configuration of Shopify connections can be added and mofified within NolaPro under Admin → System → Shopify Setup
Confirm that the webhooks section on this setup page reads as "&check Verified". If not, your NolaPro installation may need to be configured to allow for external access.
Review the available options under Integration Options as well as define your preferenced values under the Defaults section.