Completed Reminders Won't Delete
I have 16,218 completed reminders and when I try to get rid of them by clicking Clear Completed Reminders on iCloud.com from my Mac nothing happens. Its driving me crazy. It takes forever for my reminders to open on my Mac and I assume this is why. Anyone know how I can fix this? Thanks.
MacBook Air (11-inch, Early 2014), macOS High Sierra (10.13.5)