Please check the following.
Check whether the configured user id in your fb settings page is wrong or not.
The user id is the id of your personal fb account where the pages are linked.
To find the user id, please login to your fb personal account from a browser and follow the link
Now after authorization, you can see all your pages.

Please Contact Us if you have any questions or suggestions.

Visit  -  Official Blog  -  Knowledge Base (F.A.Q)  -  Documentation (User Guide)

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