All of your blocked chats can be unblocked at any time. Just follow the steps below:

  1. Go to your Messages (press the Chat icon on the Home screen).
  2. Press the 3 vertical dots in the top right-hand corner.
  3. Press Blocked chats. Now you have 2 ways to unblock the chat:

1) Swipe to the left on the chat you want to unblock. Press the lock icon.
2) Or tap on the selected chat and confirm to unblock this user.