Hello @coreycpoc,

Let's run the QuickBooks Utility tools and fix your invoice's data so your customers can pay it after sending it. I'll show you how.

A. To Verify Data

1. Go to File.
2. Click Utilities.
3. Select Verify Data.
4. Click OK.

B. To Rebuild Data

1. Go to File.
2. Click Utilities.
3. Select Rebuild Data.
4. Click OK.

In addition, here's an article you can read to learn more about the QuickBooks tools: Verify and Rebuild Data in QuickBooks Desktop.

Lastly, I've also included this helpful article for other ways that you can accept payments from your customers: Receive and process payments in QuickBooks Desktop.

Keep me updated in the comments if you have any other questions. I'll be here to lend a hand.