Thank you for taking the time to visit the Community to post your issue, although I apologize that you haven't received a response.
If you have not done so already, I would start by resetting the Quicken cloud.
Go to Edit > Preferences > Mobile & Web
Click Reset your cloud data.
Please let me know if this resolves the issue. -Quicken Tyka
Thank you for providing additional details, although I apologize that you continue to experience this issue.
First, If you haven't already and open Quicken and go to the Help menu > Report a Problem. There have been ongoing issues with the sync process. This report will help contribute to the research of these issues.
Do you use the mobile or web app at all? If not, can you confirm if the option to sync to the mobile/ web is on? To confirm, please navigate to Edit > Preferences > Mobile & Web, there will be an on-off toggle.
If this option is enabled please disable the sync and see if this resolves the issue. If this does resolve the issue, it's possible that you may need to move forward without syncing to the cloud or mobile app until the issue has been corrected.
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