What can be reasons for “person unavailable on messenger”?

[emmawhite]

Sometimes it happened when you have to face the issue of “this person is unavailable on messenger”. There are many possible reasons behind this issue, that are:
1. The person at the platform is inactive
2. The user has unblocked you
3. The user's account has been suspended by Facebook.
4. It's possible that the profile is private and you aren't on his friend list.
5. The account can be temporarily inactive.