No Properties – schedules failing
The plugin uses WordPress cron (wp-cron) to schedule the updating of the properties from the various feeds and sometimes this can be disabled by your hosting provider. If you are unsure if this is the case we recommend instally the wordpress plugin WP-Crontrol which will give useful information about the status of wp-cron.
Ask your hosting provider to enable WordPress cron (wp-cron) for your site. If that is not possible you will need to manually trigger the updates or use an online service like https://cron-job.org/en/ to ping http://www.yoursitedomain.com/wp-cron.php?doing_wp_cron to trigger the schedule automatically.