I appreciate your swift response, @kaycee1. 

At this point, I'd recommend you contact us so we can check what's causing this to happen and help you fix this issue. We can also create a case to investigate this matter whenever necessary. 

Here's how to contact our Customer Care team: 

1. Click this link: https://help.quickbooks.intuit.com/en_US/contact. 
2. Select QuickBooks Online, then click Search for something else.
3. Enter "Print and preview invoice" in the Ask us anything field and click Search.  
4. Click Start a Message and enter all required information in the pop-up box. 
5. Click I'm not a robot and click Submit. 

Once done, one of our agents will be with you shortly. Please prepare your account details for verification. 

Let me know if you have additional questions. I'll be right here to attend to all your needs.