Documents disappeared from MB Pro

Re: "Documents disappeared from MB Pro "

"... synced with iCloud and now my documents have disappeared from the Favorites area in the finder.

Storage should data in iCloud but there are no documents at iCloud.com in my account."

You can check you have enough iCloud storage space for all the files you wanted to sync

If needed: See: Check your iCloud storage on any device - Apple Support

or

How to: Check your iCloud storage on iCloud.com - Apple Support

If you find such a folder exists: Check to see if the missing documents are in it

Look for an "iCloud Archive" folder on your Mac Harddrive: Look in Users > [your name]

If the files have been accidentally deleted, you may be able to recover them on https://www.icloud.com:

See more info in: Recover deleted files on iCloud.com - Apple Support

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Trouble-shooting:

You may want to check your version of MacOS ...

ie: keeping MacOS updated to the newest compatible MacOS often sidesteps various issues

If still using MacOS 11.6 there have been many updates in MacOS 11 since then, and for many of them, this archived article: What's new in the updates for macOS Big Sur - Apple Support says: "This update is recommended for all users and improves the security of macOS." Latest version listed is: macOS Big Sur 11.7.10 (NB: If you choose to update, or upgrade, the Mac OS: it is always wise to back-up your Mac first)

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You may want to check, or: Change which apps sync and store data with iCloud - Apple Support

Apple Support says:: Archive or make copies of the information you store in iCloud - Apple Support

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If needed: You may want to reach out to iCloud Support:

(There is a "Get Support" link (online chat, phone, eMail etc) at the bottom of their webpage (link below):

iCloud - Official Apple Support

or

This online resource can be useful: iCloud User Guide - Apple Support

and

There's a Web-form for Feedback - iCloud - Apple : Feedback - iCloud - Apple