Hello,

I'm currently implementing an endpoint for flows using these Facebook's Booking Appointments documentation https://developers.facebook.com/docs/whatsapp/flows/guides/implementingyourflowendpoint and this https://developers.facebook.com/blog/post/2024/02/27/appointments-with-whatsapp-flows/

I've set up my server and configured the private/public keys. When I send a Health Check to the setup endpoint, I receive the encrypted message with the parameters encrypted_aes_key, initial_vector, and encrypted_flow_data, which I can successfully decrypt, resulting in a successful Health Check request.

However, when I send a flow example to my test number, I don't receive these three parameters (encrypted_aes_key, initial_vector, and encrypted_flow_data). This causes my application to crash.

Could anyone provide guidance on why these parameters might be missing and how to resolve this issue?

Thank you in advance for your assistance.