In Juphy, you won’t get this error anymore, we’re an official partner with Facebook and Facebook gave us an API to overcome this issue.
Solved case;
https://juphy.canny.io/feature-requests/p/facebook-24-hour-time-limit
When you receive a new message on Facebook Messenger, you’ll have 24 hours time period to send your reply. Otherwise, you may receive (#10) This message is sent outside of the allowed window error message.