If the issue is not resolved after following the recommended steps, you will need to contact your financial institution to resolve this issue. Quicken does not have access to the financial institution's servers to correct the problem.
This may require you to ask to speak with an online services specialist that handles transaction download issues at the financial institution. If your financial institution states they can't assist, an escalation with the financial institution may be necessary. Please let us know how it goes with the financial instituion.