Heads up, Creators: On Dec 13-14 you may see a noticeable decrease in your sub count as we remove spam subscriptions. If spam is removed, you'll see a YouTube Studio alert: https://goo.gl/qGDBvX This should help give you confidence that the subs you do have are real fans!
Yeah, that's what I found out as well, after 3 years of making videos, now I don't even get a reply from them with a proper explanation. The one time I needed their support, and they just don't care.