I'm glad you've posted here in the Community forum, 706muzik. I recognize the importance of timely access to your funds to ensure smooth business operations. I've got more details to help you avoid delays in receiving invoice payments.
If you sent an invoice yesterday morning with QuickBooks Payments enabled for the first time, the first set of payments will be deposited within five business days, as we're still in the process of setting up your account. After this, rest assured your payments will be processed at the regular speed, allowing you to receive payment on your expected time.
Delays in receiving payment for an invoice you've sent can vary depending on the product and the payment type you're processing. I'm adding this resource for more details about this process: Find out when QuickBooks deposits customer payments.
Additionally, if there's an issue with the transaction, you'll receive an email containing steps on how to address it. I recommend checking your inbox and junk or spam folders.
I've included this article for future reference about personalizing your invoices and other sales transactions in QBO: Customize invoices, estimates, and sales receipts in QuickBooks.
Understanding the cause of the delay helps you address the situation and plan accordingly. If you need further assistance accessing invoice payments in QuickBooks, please share it in the comments. I'd be happy to assist you again. Goodbye!