Hello,
Could you, please, add our user (8themes@gmail.com) to the list of the admins of your Instagram account https://www.facebook.com/business/help/1125825714110549?id=420299598837059
? Or temporary share your access to check the issue in more detail. Because looks like there are some problems with the user permissions but we don’t understand where exactly and need to check the settings that you have.
Regards