Hello Kyle,
Thank you very much for all this detailed information and explanations, as well as for your quick response.
I tried to do what you shared with me by adding the CB menu item with all the settings as shown in your image, but unfortunately, this does not solve the problem.
Here is the error message I receive on the console, prior to sending a text message :
This message contains confidential information
And after sending the message :
This message contains confidential information
This message contains confidential information
Thank you, have a beautiful and peaceful day.
Mathias