how to get notability to backup to icloud

Hello maleldil398,

Welcome to Apple Support Communities. 

We understand that you want to backup content from the Notability app using iCloud. We are happy to point you in the right direction.

Please contact the developer of Notability using the steps here: How to contact an app developer - Apple Support

"Contact the developer of an iOS, iPadOS, or watchOS app

1. Open the App Store on your iPhone or iPad.
2. Search for the app, then tap it. If you can't find it, tap the account button  or your photo at the top of the screen, tap Purchased, tap "Not on this [device]," then tap the app.
3. The app's product page appears. Scroll to the Ratings & Reviews section, then tap App Support. If you don't see App Support, make sure that you're signed in with the correct Apple ID."

Let us know if you have further questions.

Take care.