Here's a response you can use for a Messenger help center:

Subject :Couldn't Send the Message Problem

Content:

Hi there,

I'm experiencing an issue where I can't send messages on Messenger. I've tried [mention any troubleshooting steps you've already taken, such as restarting the app, checking my internet connection, or clearing the app's cache].

*Can you please provide some troubleshooting tips or solutions to help me resolve this problem?*

Thanks,
[Your Name]

Additional Tips:

* *Device Information:* Mention your device's operating system (iOS, Android) and version.
* *Messenger Version:* Specify the version of Messenger you're using.