>The error did not disappear.
Even, after re-connecting the Facebook in the widget?
>But why do you request control of my page? And the pages that I manage?
The plugin uses a Facebook Graph API to show your FB page reviews. The Graph API requires the access token through which the plugin can get the reviews and this access_token, the plugin can get only when you allow the access of our application for your FB page.
This is the official and only one way described on Facebook and must be pre-moderated in Facebook before the other clients can use it.
The plugin is 100% meet all the requirements of Facebook itself to display reviews on third-party sites.
Thanks!