Verify your website domain in Business Manager and be able to change your link post thumbnails!
👉 Open your Business Manager (https://business.facebook.com/settings) and first select the correct Facebook Page (1.), then open the Brand safety settings (2.) and select Domains. Now click the blue button Add (3.).
👉 Fill in your website domain and hit the Add button.
The domain will be added to your assets, and you need to verify it by following the steps and eventually by the green Verify button.
Image Source: https://developers.facebook.com/docs/sharing/domain-verification
Once the domain is verified – you will see a green label "Verified. "
Next, add the Facebook page to Connected Assets. Done! ✔️
If you still do not understand the verifying process or something isn't clear, please watch this video tutorial made by Facebook.
Now, return to your ZoomSphere Settings/Social channels and refresh your Facebook Account.
Facebook Link Post
Once your domain is successfully verified and your Facebook account successfully refreshed, you can change the thumbnail for your link post. 👍
Insert the URL link to your Link post and wait for the default picture to be fetched. Then click on the scrape (refresh) button – and the Upload button will appear. Now, you can upload a new thumbnail picture. 👏
Learn more about changing the thumbnail picture for Link posts here.
If you have any issues verifying your domain, please contact Facebook support.