To sync Instagram pictures to WooCommerce Lookbook, follow these guides:
1. Create Facebook App at https://developers.facebook.com/
2. Click My Apps > Create App
3. Go to Settings > Basic > Copy App ID, App Secret to fields and paste in the plugin settings/ Instagram
4. Go to Dashboard > Add Facebook Login, Instagram module
5. Go to Facebook Login > Settings > Paste “provided URL into “Valid OAuth Redirect URIs” field.
Find and copy the provided URL in the plugin settings/ Instagram and paste into the Valid OAuth Redirect URLs in the Facebook login settings.
6. Go to the plugin settings/ Instagram > Save Settings
7. Click to Get Access Token > Save setting.
8. Go to All Lookbook/ Sync Instagram
Here is the guide video: