Unsent messages are a common problem in social media. It is difficult to identify who unsent a message, and it is also difficult to see if someone has read your message.
This article provides the steps that you can follow to see who has unsent a message on Instagram.
1) Scroll down and tap on the three dots at the top right corner of your screen (the three dots will be grey if you have not received any messages yet).
2) Select “View Activity Log” from the drop-down menu.
3) Scroll down until you find “Unsent Messages” section in which you can view all the messages that were sent but never delivered by Instagram.