During development, the private reply API (https://graph.facebook.com/PAGE-ID/messages) was working correctly. However, after my app's review was rejected, the API started failing.

The error I encounter is:

"An unknown error has occurred."

Is it possible for an API to stop functioning after an app review rejection?

Investigated Details:
The token's validity has been confirmed as fine via the developer tools. The COMMENT-ID was obtained from the Webhook, so it should be correct. The PAGE-ID works with other APIs, so it also appears to be correct.

Tag:facebook, facebook-graph-api, instagram, instagram-graph-api

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