Can I reverse payments? QuickBooks randomly allocated payments probably because the same client paid the same amounts in the past , to unpaid, even unsent invoices.

Hello Arekdomagala1-go, thanks for posting on the Community page, you can either reverse the paid invoice, by simply going to the paid part of the invoice so when you're on the receive payment page if you click on more then delete this will remove the payment for you and open up the invoice again for you or you can undo it in the reviewed/catergories section on the banking page.