Hmm, that seems odd. You can update your notification settings by following the steps outlined here: https://yt.be/help/NYFp . Hope this helps!
@TeamYouTube
Why is it that some of my favourite channels' notification settings are getting randomly changed to "Personalised"?
(What does this mean for my notifications?)pic.twitter.com/dswSxyJEvF
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Thank you!
End of conversation
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