Scheduler in ST is buggy. It’s a known issue.
This could help you update/reinitialize the schedules. Announcement: New "Update" feature in the IDE
Or just switch to something that works like Rule Machine created by @bravenel. He recently updated Rule Machine to work around the ST scheduling issues. It’s been working flawlessly for me. You can download it here: Rule machine - as per the app developer, this app is no longer available for new installs, distribution, or support