I can see the convenience of being able to receive payment notifications, AcUserthis.

While we don't have an exact time frame on when this issue we'll be fixed, you can just have an internal agreement with your customers that they will let you know once they will make an invoice payment. You'll also want to visit our Customer Feedback page if you want some changes on how you're going to receive the notification. At the same time, you can also view some of the customer requests that have been submitted which can greatly improve our product and provide the best QuickBooks Online (QBO) customer experience. 

Aside from that, we have other support channels that are ready to help you ensure that your concerns are properly addressed. You'll want to post it here or contact our support team to better assist your needs.

Moreover, learn how QuickBooks categorizes transactions once payment has been downloaded from your bank. Go through this article for more information: Categorize And Match Online Bank Transactions In QuickBooks Online.

Fill me in if you have any other concerns about payment notifications. I'll always be right here to help you.