We'd like to help. 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.
Oh ok. Check your bell settings for that channel & see if you've opted-in to receive all notifications. You may be on the default setting, which is to receive notifications occasionally. Also, here's a guide to help check your app & device level settings: https://goo.gl/giVA8o