You might be experiencing some browser hiccups, A_pcompliancetes. Let me help you fix this.
We'll have to perform basic troubleshooting steps to resolve this issue. Let's start with accessing QuickBooks Online through a private browser. This is the best place to isolate web issues. These are the shortcut keys:
Google Chrome: Ctrl + Shift + N
Mozilla Firefox: Ctrl + Shift + P
Safari: Command + Shift + N
If you're able to print the invoice using the incognito window, let's go back to your main browser, then clear its cache. It's advisable to delete them periodically to prevent and fix web issues.
On the other hand, you can use a different web browser. It could be the browser you're using has issues with our program.