The person is now unblocked. They can see your profile again, and you can search for them to send a new friend request. Method 2: Unblocking via a Web Browser (Desktop/Laptop) If you prefer using Facebook on a computer (or you’re at work trying to fix a social mistake), here’s how:
Find the person you want to unblock. Next to their name, tap the blue button that says Unblock . unblock a person on facebook
In the left-hand sidebar, click Blocking . The person is now unblocked
Go to facebook.com and log in to your account. unblock a person on facebook