Welcome to the Community forum, hdearly187. I want to make sure you can receive your customer payment.
Since QuickBooks Payment hasn't been set up to receive invoice payments, I recommend reaching out to your customer to confirm the bank account they used for the payment. You can find more detailed guidance on receiving invoice payments in this article: Record invoice payments in QuickBooks Online.
For useful insights into your purchases, sales, and inventory status, take a look at this article on which reports to run: Use reports to see your sales and inventory status.
If you encounter any further concerns while using QuickBooks Online, don't hesitate to return to the Community. We're here to help, hdearly187!