Notes not syncing across devices
For months, I've been unable to get Notes to sync across any of my devices.
- Affected devices: iPhone, iPad, MacBook Pro, iMac, and iCloud.com
- All other application data appear to be in sync
- Running the latest production version of iOS 11 and macOS High Sierra
- Notes is enabled in the iCloud settings screen on all devices
- "On My Mac", "On My iPad", and "On My iPhone" are disabled
- "Default account" in settings reads "iCloud" on all devices (no other options listed)
I can't find any way to fix or troubleshoot this. I have important notes on all my devices, so I need to merge all of them, rather than pick one to sync across the rest.
MacBook Pro with Retina display, OS X El Capitan (10.11.6)