I can provide the status of the issue when printing checks, PadgettPamela.
Our Product Team has already fixed this and found out that a pop-up blocker is a cause why checks suddenly stopped printing properly.
QuickBooks Online uses pop-up windows to perform many tasks.
Occasionally, certain updates will reset default settings to a pop-up blocker on your browser. To disable pop-up blockers, follow:
If this does not resolve the issue, add Intuit as a Trusted Site. You can also check out our Browser Health Checkup tool to see if we can detect any potential issues with your browser.
Also, if you're using your own checks to print, they need to be formatted for QuickBooks. You can order QuickBooks compatible checks from Intuit to ensure compatibility of the alignment.
On the other hand, you can send this link to your client: Fix print alignment for preprinted checks. It provides instructions and detailed steps.
If the same issue persists, I recommend contacting our QuickBooks Online Team. They can create a new case and send it to our Product Team for further investigation.
Let me know if there's anything else you need with QuickBooks. I'm always right here to help you.
