iCloud for Windows not syncing

I have an issue on Win 11 (version 10.0.22621 Build 22621)

When I add files, folders or anything for that matter to my iCloud drive to sync to the cloud, nothing syncs and I'm not able to see the files/folders on my iPhone or MacBook.

I have tried resetting the app, doing the 'repair' option, everything inc windows and iCloud are up to date.

This has been a persistant issue for weeks. The iCloud drive initially syncs but after a short time anything I add stops sycning.

Does anyone have a solution or any tips? It would be greatly appreciated! Thanks!