For account orders with pending payments, your business can set a price hold period during which the price of the order will not change. After the period passes, the order is cancelled.
To set the price hold period:
Open the administration interface.
In the upper left corner of the page, click the menu icon.
From the left menu, click Settings.
In Settings, click Payment Processing.
Click the Setup tab.
Enter the amount of time in days and hours to allow the shopper to provide missing payment information before an order is cancelled. The order’s prices will not change during this time.
If you leave both Days and Hours blank, there is no time limit.