Facebook tracking app.
You’d better use a spy app that actually works to fix your problem. Mobile spy apps are easy to use and work well. With the help of such applications, you can control the work of a specific user not only on the Internet, but also on popular social networks, and there is also the ability to check messages, you can learn more by looking at the article
https://www.laocentermn.org/how-to-log-into-someones-facebook-messenger/ this actually works