Look for the tab that says Blocked users (sometimes labeled "Hidden users").
Go to YouTube.com and make sure you are signed into your account. unblock youtube user
Open the YouTube app and tap your Profile Picture in the bottom-right corner. Look for the tab that says Blocked users
Under the "Privacy" section, tap Hidden users (or "Blocked users"). unblock youtube user
You don’t need their approval, and they’ll never know you did it. Have a question about a different YouTube privacy setting? Leave a comment below (just don’t block me!).