If you're talking about a doorbell ring, do you have "Push notifications" turned on in your doorbell's Settings?
If you're talking about a Motion or People event, do you have that event enabled under Settings | Events | Seen Events, and turned on for "Notifications"?
Just checking in to make sure that you've seen our responses. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.
Thanks for chiming in, Jake.