How To Unblock In Facebook -

Blocking someone on Facebook restricts that person from seeing your profile, sending you messages, adding you as a friend, or interacting with your posts. Unblocking reverses this—but with one major caveat.

Unblocking is simple, but remember that rebuilding a connection requires a new friend request and mutual consent. Use the feature wisely, and be aware that repeated blocking/unblocking can trigger temporary restrictions from Facebook. how to unblock in facebook