You've downloaded the app, but when you try to open it you get an error. Here's how to download the app and resolve the error:
2. Click "Security & Privacy."
3. Click "General"
4. Click the Lock icon in the bottom left-hand corner.
5. Fill in your username and password.
6. Press OK.
7. Click "App Store and identified developers"
8. Re-open the Prime Edits app.