Hello timothyfromjacksonville.
Welcome to Apple Support Communities.
If I'm understanding correctly, iCloud D has stopped syncing files. I will be glad to assist.
Please see the steps below that can help resolve this:
Check these things first:
If you tried these steps and your files still don’t upload to iCloud, stay signed in to iCloud and save your updated files to a different folder on your Mac or PC. Then contact Apple Support for more help.
If you get a Resolve Conflict message when you open a file, choose the version of the document that you want to save. Then choose Keep to update the file in iCloud. This message means the file was updated on another device or from iCloud.com since the last time you signed in to iCloud."
Cheers.