Welcome to the Community. It's essential to correctly match your transactions to keep your books up to date. QuickBooks Online is a flexible program that simplifies the way you manage your books. I'd be glad to point you in the right direction to match your transaction.
QuickBooks offers the ability to match your bank feeds with your transactions in QuickBooks. If you're unable to match a bank feed against an invoice which is greater in amount than that on the bank, you can record the payment from the invoice and then match that payment with the transaction from the bank feed.