How do I backup notes from the D Notes app?

I use the D Notes app (icon is a pencil in a red circle). I'm trying to make some backups of important information, and this is probably the most important information. I make a lot of separate notes, and so the only option I've found at the moment - share->emailing each to myself individually would take a very long time, so I've been trying to find the app's local files so that I can copy the notes directly. Unfortunately, I can't manage to find the files! Any help in finding a system that would allow me to bulk transfer or backup notes from this app would be much appreciated.

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https://forums.androidcentral.com/sh...d.php?t=409154

Welcome to Android Central! Probably best to contact the developer about that: dvdb.software@gmail.com

Unless you know for sure a note-taking app has a good backup system (either locally or to the cloud), I wouldn't use it for important notes. Stick with a note-taking app that immediately syncs to the cloud, like Google Keep Notes, OneNote, or Evernote.