You'll want to check account, device, and channel notification settings. Here's a troubleshooter with the exact steps: https://goo.gl/giVA8o
@TeamYouTube Hey, I still don't understand how notifications work. As you can see below, even though this creator has uploaded 3 videos all at the same time, only 1 showed up in my all channels subscription feed. So how does this thing work? :/pic.twitter.com/XVxjpawMbY
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Ok, thanks Team Youtube.
End of conversation
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