Hello there, @Carl. Let me share insights about the average days to pay report in QuickBooks.

The Average Days to Pay report will help you determine how long your customers normally take to pay their invoices. It is available in both summary and detail formats. The detailed version shows the time to pay each invoice plus an overall average number of days.

In your case, you'll want to make sure that you filter it to the correct days so it will show in the report. To filter your report, you can follow the steps below:

1. Click on Reports from the menu bar.
2. Choose Customers & Receivables, then select Average Days to Pay.
3. On that report, click Customize Report at the upper left.
4. Go to The Filters tab, then on the Choose Filter field, pick Paid Through on the Filter drop-down.
5. Select a date range on the drop-down list or on From and To, then OK.
6. Filter the necessary details you want to include in the report.

On the other hand, you can also pull up the A/R Aging Detail report. It will display complete details on the average days your customers were able to pay their outstanding balance for a specific date range.

Here's how: 

1. Go to the Reports menu.
2. Select Customers and Receivables.
3. Click A/R aging Detail.
4. Choose Custom in the Dates drop-down arrow and filter the dates.

For additional reference, you can check this article on how to customize reports in QuickBooks Desktop.

In case you're working on the same reports on a daily, weekly, monthly, or quarterly basis, you can automate this task. For more details, please see this article: Set up and modify Scheduled Reports.

I'll be glad to help you again if you have more questions about running reports. I'm still here to help you. Have a good one!