The transient data is still not being deleted from the wp_options table. I have confirmed the schedule is active under Settings > Maintenance. I disabled and re-enabled “clean up temporary data” on the Stats page, waited until the date/time shown next to Clean Transients on the Maintenance page had passed. They were not deleted. I tried all that a couple of times.
Everything is set correctly based on your guidance, but they are still not being deleted and I have to do it manually every few days so my site won’t be impacted. Is it possible that the plug-in does not have permissions to delete from the wp_options table? Could that be why they are not being cleaned up?