Background reminder :
Facebook updated its policies and rules for use on the 4th of March 2020.
As of this date, it is no longer possible to reply to a visitor who sent a message more than 24 hours ago via Facebook APIs.
This restriction applies to Facebook and Messenger third part messagings channel in the iAdvize solution.
What happens if you answer after 7 days ?
In the conversation panel, an error message will be displayed whenever the agent attempts to reply :
Here are different options in this case :
1. Close the conversation and wait for a new message from the visitor.
2. Log in to the Facebook or Messenger interface and reply directly to the message.