Definitely something wrong...pic.twitter.com/R9AKYzKGhH
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Sorry for the confusion, have them check their bell settings for your channel and see if they opted-in to receive all notifications. The default setting is to receive notifications occasionally – here's a guide for that: https://yt.be/help/AKer Hope those steps work.
I thought the whole point of the bell was to receive all notifications? Why is that not the default setting? 
Don't even try, they always come with default answers and never fix nothing. De damn bell was a big mistake.
Oh, you subscribed to someone? Must mean you only want to watch their videos we "Think" you'll want to watch.
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