Facebook Messenger is down. It is taking time to load and send the messages. This problem is faced by many users not only in Nepal but all over the world.
According to Down Detector website that tracks servers based on online services, tens of thousands of Facebook users from different countries, including Nepal, are not able to access Messenger every minute. According to Down Detector, 2400 users are not able to login, send messages and receive calls every minute.
It is unknown at this time what caused the problem and the developer team is trying to find it.