Sometimes this happens due to an authentication failure. So to get your Custom Branding to work please follow these steps
- Click Accounts -> Manage Accounts
- Select and delete your already connected Facebook accounts for which you want the Custom Branding to work.
- Now go to Accounts -> Connect Account -> Connect Profile
- From the drop-down, click on the Custom App you created.
- It will take you to Facebook for authentication.
- Once you’ve finished authentication, try sharing the posts.
Now they'll be posted with your brand name. And if still, you are facing an issue and your custom branding is not working please reach to us at email@example.com