Backup Z-Wave JS UI NVM data of ZWA-2 controller questions

I have backup enabled in Z-Wave JS UI as shown below. I left the cron job time at midnight. So it should have ran last night I believe. Can someone tell me where the backup file would be located? I want to ensure the backup is backed up.

Also, I’m getting the errors below regarding the security keys, and that they must be different. I just clicked on the red double arrow buttons to generate these. What do I need to do here?

-Thanks