This issue is fixed for new video uploads! Creators, you're now good to upload/stream/premiere, as channel page, subs feed, and notifications are working as usual. See the Community post for more details about what went down → https://goo.gl/zyvCgC https://twitter.com/TeamYouTube/status/1088127086663888896 …
Thanks for reaching out. We've included our Help Center article which has the more info about managing the address and further steps: https://goo.gl/BwfbL7 . Hope this helps.
