For the past few days, a YouTube purge happened, and "inactive" subscribers were unsubscribe from various channels. The problem: ACTIVE subscribers are also apparently being yanked too. If this tweet is any indication, the purge may not have been planned, meaning chances are it was a server glitch.
https://www.twitter.com/TeamYouTube/status/747825349816365056And according to AlphaOmegaSin on Twitter, subs have been yanked from people's YouTube channels for the past 3 days at the same hour.
https://www.twitter.com/AlphaOmegaSin/status/749026807471542272Earlier this week, I had 30 subscribers. Today, I have 28 and I'm not sure if it happened during this whole thing or not. If you're subscribed to me, or anyone else on YT, CHECK YOUR SUBSCRIPTIONS AND MAKE SURE YOU ARE SUBSCRIBED TO EVERYONE. If you aren't re-subscribe to the missing channels.