You may not be receiving messages from Facebook Messenger due to interference from other apps.
To resolve this, watch the video and follow the steps below.
- On your Facebook page, go to Settings > Advanced Messaging.
- Select "Responses are all provided by people."
- Below, in "Apps configuration," click "Configure" and choose Sirena's handover protocol as the main Receiver.
- Close the window, and you're done! The problem should be resolved. if not. contact Support.