Trying to get an app review completed, and have been rejected multiple times. the reviewer is asking for a test user, but when trying to create a test user on our app dashboard, we are told repeatedly that "the ability to create test users is disabled temporarily"

Our app currently cannot allow user to use "Facebook login" as our engineers found that our app has been disabled in production in Facebook (Meta), not sure what problems / issues have been facing here and we'd like to follow up with your end to know more as it's critical for continue to have our users to login our app with Facebook.
We only see the message of "We've disabled this app for violating the Meta Platform Terms and Developer Policies. You can continue to use it in development mode. Read more or appeal"
However, when we clicked "appeal", there's no app being displayed at all on that page so there is no way for us to appeal or understanding what are the issues there. And I'm already the app administrator and also I've checked with several other app admins for the app and we all could not see any information on the appeal page. Please advise what might be the issue and how we can resolve it so that our users can continue to use Facebook Login in our app?

The permission which is used so far
pages_manage_engagement, pages_manage_posts, pages_read_engagement, and pages_read_user_content

When sending messages through the cloud Whatsapp Business API, is there a way to send custom fields that will be returned in the webhook notification?

Apart from saving the ID received in the response when sending the message, I could not find a way to connect between the sent message and the returned webhook.

All of the sudden clients started having incorrect images showing for their Facebook posts. When we run the URLs through the facbook debugger, we're receiving this error message even though valid images are used for the og:image tag. I'm seeing it happen across multiple websites.
Corrupted Image Provided og:image URL, https://faithconnector.s3.amazonaws.com/3322/images/thumbs/announcements/37488198_10155892158683924_2420206705427087360_o_10155892158673924.jpg?t=261737 could not be processed as an image. It may be corrupted or may have an invalid format.