To check that you are the administrator of your Facebook page, please follow one of these links:
- https://www.facebook.com/help/510247025775149
- About permissions on different roles: https://www.facebook.com/business/help/442345745885606?id=180505742745347
- Add a new person on Meta Business Suite: https://www.facebook.com/business/help/2169003770027706?id=2190812977867143