Thanks for letting us know. Just to confirm, are your subs reporting that no notifications are sending or that your videos aren't showing up in their subs feed? Appreciate the details!
Appreciate the details. To confirm, has your subs opted-in to receive all notifications? They might be on the default setting, which is to receive notifications occasionally. Also, ask them to check their app and device level settings: https://yt.be/help/abj4 . Hope this helps.
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.