@YouTube hey I cant get notifications on anybody leaving comments or reacting to my comments/videos even with notifications enabled and I am no longer seeing when I gain followers. I personally added 50+ people yesterday and the number is staying the same.
If you get a lot of comments on a video, you may not get a notification for every comment — we'll send you an occasional notification instead. For the subscriber's notification, check your channel settings, email settings, and make sure that you're signed in to the right account.