https://www.quicken.com/support#contact-support
In regards to your issue with transactions changing from the reconciled status, if you haven't done so already. I would start by validating the file.
File menu > File Operations > Validate & Repair option.
In the Validate File window that opens, click the top box to "validate file" and then click OK.
When the validation completes, a data log will open in Notepad, please let us know if any errors or issues are found/repaired, and when ready close and re-open Quicken.
-Quicken Tyka