To grant the Lengow app access to your product data and metafields, follow these steps:
1. Log in to your Shopify Back Office.
2. Go to the Apps and Sales Channels section.
3. Find the Lengow app in the list of installed apps.
4. Click on the three-dot menu (...) next to the Lengow app.
5. Select "Open app" to access the app’s settings and update the data access permissions.
This process ensures that the Lengow app can sync with your Shopify store and access the required product data.