When the public users are trying to access our app they are getting error that the app is not available.

Below is the link of authentication

https://www.facebook.com/v19.0/dialog/oauth?client_id=1313316726224435&redirect_uri=https%3A%2F%2Fwww.wardroll.com%2Fapi%2Ffb-ig-callback&scope=public_profile%2Cpages_manage_metadata%2Cpages_messaging%2Cpages_show_list%2Cinstagram_basic%2Cinstagram_manage_comments%2Cinstagram_manage_messages%2Cpages_read_engagement%2Cbusiness_management&response_type=code&state=eotee2a0wov&display=page&extras=%7B%22setup%22%3A%7B%22channel%22%3A%22IG_API_ONBOARDING%22%7D%7D

We have Advanced access of public_profile, pages_manage_metadata, pages_messaging, pages_show_list, instagram_basic, instagram_manage_comments, instagram_manage_messages, pages_read_engagement, business_management

The app is working fine for the developers but not for the users who are not developers.