Scheduled scans not running

Scheduled scans haven't successfully run on my computer (running windows 10) since the BTS 2019 update in 2018. The update to BTS 2020 in 2019 fixed the issue temporarily but after a reinstallation of Windows 10 scheduled scans stopped running again.

The latest BTS update was 2 days ago and scheduled scans still aren't working although I can run manual scans with no problem.

This continuing problem, along with the recent disappearance of the security widget, is making for a much less effective user experience for me.