Applies to users with macOS 10.14 Mojave, macOS 10.15 Catalina and above
Due to the enhanced security Apple introduced in macOS 10.14 Mojave, you must now explicitly authorize apps to access specific data, including iTunes backups. These security enhancements are also applicable to macOS Catalina, including Finder backups.
To allow Keepster to use iTunes or Finder backups, you need to follow these steps to authorize Keepster. If the settings are not applied, you will get a notification when you attempt to make a backup in Keepster that looks like this:

Step 1: Open System Preferences
To make things easier, we included a button that will open your System Preferences.

Step 2: Unlock System Preferences to allow changes
Your computer requires that authenticate to adjust your system preferences. Click the lock icon in the lower-left corner unlock and allow changes. Enter the password you use to log into your computer.

Step 3: Add Keepster as an app that is allowed to access your data
Click the “+” & find Keepster in the Application folder. Select Keepster and click Open. Click Later, when prompted to quit Keepster

If done correctly, you will return the Security & Privacy screen and see Keepster listed as an allowed app.

Now that you have added Keepster as an allowed app, you can click the Lock icon again to close and prevent further changes to your settings.

Step 4: Relaunch Keepster to allow changes to take effect
Now that you have completed making the adjustments to your Security & Privacy settings, you will need to relaunch Keepster. To make things easier, we included a button that will quit and restart Keepster for you. You can close the Security & Privacy screen and return the Keepster app. Then click the button in the Finish section to relaunch Keepster.
Congrats you are DONE!
Now you have given Keepster permission to access your iTunes or Finder backup. When Keepster relaunches and opens again you will be able to complete a Keepster backup. If you have further questions, you can email support@keepster.co or ask us using chat on the website.