The Merchant Service Reminders area on the right of the QuickBooks Home page shows you when you have customers payments to download.
How often are Merchant Service Reminders updated?
Get Online Payments is updated once per day, when you open QuickBooks. In order for this option to work, the Automatic Update for Service Messages must be turned ON. If you want to update Get Online Payments more than once per day, you can force an update by going to the QuickBooks Help menu and clicking Update QuickBooks. Make sure the Service Messages option is selected. To see the results of the update, you must close the Home page, and then re-open it.
Download online payments