To understand the solution, you must understand the mechanism. Most firewalls (like those in schools or offices) use .
If you are using a computer, you can manage your blocks through the Messenger web portal. Click your (bottom-left) → Preferences . unblock messenger call
To "unblock" Messenger calls, you typically need to address either a privacy setting (if you've restricted someone) or a regional restriction (if you are in a country where VoIP is blocked). 1. Unrestricting or Unblocking a Contact To understand the solution, you must understand the