@TeamYouTube why am i getting notifications from a channel im not subscribe to and also have no interest inpic.twitter.com/N5PflXWQEC
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This is likely a recommended notification. You can turn these off from the menu button > Settings > Notifications > uncheck "Recommended videos". Also, could you ask your subs to check notification settings with these steps: https://goo.gl/3Y61ph . Hope this helps.