There can be numerous reasons why you can’t see the Instagram channel after correct authorization.
There is no Instagram profile connected to your Facebook page. Please, make sure that there is a professional Instagram page connected to it.
Your channel is not a business page. In this case, please convert your Instagram to a business account. You can find some help here and in this video
If you still experience a problem, please contact us and we will try to help you!
Updated about 1 year ago