Whether you’re clearing out an old "ignore" list or you accidentally hit the wrong button while moderating a comment section, unblocking someone on YouTube is a quick fix.
Alternative (older/simple route via channel page): how to unblock users on youtube
Tap the three vertical dots (kebab menu) in the top-right corner of the screen. Whether you’re clearing out an old "ignore" list
: Look at the left-hand sidebar menu, scroll to the bottom, and click on the Settings option (represented by a gear icon). scroll to the bottom
: Go to the user's channel page, click the About tab (or the three-dot menu), and select Unblock User . Mobile App :
Under the "Safety" section, you will see a list of your blocked users.