Reports in PDF won't download (if large)

Hi,

We currently have 2 separate SR Postage accounts on SR Web. We can download to PDF the monthly reports of our account that has less volume, but our larger volume account shows an error when we attempt to download the report: Unable to make report. Error: The underlying connection was closed: An unexpected error occurred on a send..

We basically just need the total postage amount used from each account so we can forward over to accounting. This seems to be the best report to run, but if there's another way, please let us know.

Thanks!