Hey! I'm using Button Template for Instagram Messager API.

Since around March 27, 2024, an issue has been occurring where messages using Button Template are not displayed on the Instagram app. The flow up to the occurrence of the error is as follows.

1. User comments on a post
2. The webhook coming from Meta is normal (as shown in the attached image)
3. Request Meta's API to send a message with a button on the our product side
4. "Unknown method" is returned from the API response
5. User receives DM, but message with button is not displayed

Do you know the cause?