Sometimes Facebook might revoke our access permissions to your pages due to password changes or a security policy update - this in turn blocks ProveSource's access to your page and we are unable to fetch new reviews from your page.
Usually the error code is 190 and the error subcode is 460, Facebook documentation says it's related to user password or permission changes.
Reconnect Facebook Page
To reconnet your Facebook page:
Edit your notification
Click Continue with Facebook
3. Click Edit Settings
4. Make sure your page is selected
5. Make sure all permissions are toggled ON
Fully Re-authorize and connect your Facebook Page
Sometimes simply reconnecting your Facebook page simply does not work and you need to fully remove the app and re-authorize it.
Go to your business integrations page here.
Select the ProveSource app in the Active tab
Go back to ProveSource dashboard and click Continue with Facebook again