1. In Shopify Store, go to Apps at the bottom left section
First, open your Shopify store & click on Apps at the bottom left menu of the screen.
2. Click 'App & Sales channel settings'
In Apps, open App and sales channel settings as shown in the below image.
3. Click Develop Apps
Next, click develop apps to create a new app.
4. Click Installed FlexiWaba App
Next, click on your installed FlexiWaba app to make the necessary changes.
5. Click Review Configuration
6. Tap on Edit
7. Search for "Customer" in the search bar
8. Tick the "Read customers" permission & Press "Save"