YES! please add this feature and be sure to add it to desktop as well. It is not at all unusual for businesses to generate many invoices per month and then have payment made on the total balance. It's also especially helpful when the statement is being used as a reminder of a cumulative balance due. If payment cannot be made from the statement each outstanding invoice would need to be resent individually in order to have access to the "pay now" button.  Here's hoping this feature is added soon!