In the Messenger app, click on your photo icon in the upper left corner. Secondly, scroll down and click on “Account Settings”. Consequently click on “Blocking”. Although, If you enter a name in the text box, you can click on the “Block” button to block them. Below the text box, there is a list of people previously blocked. To know how to unblock someone on messenger, click on the "Unblock" button next to the name. Click the blue "Unlock" button to unlock that person and visit our website.