Hello,
I had the same problem, having installed the plugin mid-2022.
I took a quick look at the code and noticed the scheduled event aal/maintenance/clear_old_items
which deletes old items is created when the plugin is activated.
But when using the command wp cron event list
, I could see that the event was missing and therefore nothing was deleted.
I simply deactivated the plugin and activated it again, and now the cron event is working and listed when using the command.
Hope that helps,