Backup Reminder Photoshop Elements 2020

The previous version I ran of Photoshop Elements (v16 I believe) used to regularly remind me when I had added a certain number of photographs to my files that a catalogue backup was required.  I am now running Photoshop Elements 2020 (ie version 18.0.0.0), but this no longer seems to happen - or at least it hasn't happened so far.

Is there a reason for this - or is it perhaps something I'm missing in settings?  Of course, I should remember to backup regularly, and normally do so - but a nagging reminder is always useful if I forget.