Add Push Notifications and Account Registration to AppGyver

I am trying to create an app for my church that I can also be able to edit.
I have setup the main structure for the app already on AppGyver and plan to stick with this.
I am trying to add two main things: Push Notifications and Account Registration to my current app.

Because everything on the app is basically there, budget for this is limited. Please do not bid if you are going to ask for additional funding.

Thanks