Hello,
Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for the delay and for any inconvenience this issue may have caused you.
Cron is a technical term used for commands to run on scheduled time or at regular intervals. Most web servers use it to maintain the server and run scheduled tasks:
https://www.wpbeginner.com/plugins/how-to-view-and-control-wordpress-cron-jobs/
The whole purpose of adding the Schedule was to not put any load on your servers. Also, the cron jobs can be scheduled over various hours of the day without putting any load on your server. You can coordinate with your web host for managing cron jobs on your website.
Hope that helps. Thank you and looking forward to your update.
