Yes, you're right, @bethh1. When you uncheck the Print Later box on the Create Check screen, the check number will auto-populate based on your current check number sequence, allowing you to seamlessly use your normal check numbers.
To resolve this, I recommend logging in to QuickBooks Online through one of the recommended supported browser, which help ensure the application loads correctly. This resolves common issues where fields fail to auto-populate or display outdated information.
If you have tried the steps above and the check number still does not populate, I recommend contacting QuickBooks Online Live Support. They can review your account in detail and provide further assistance with troubleshooting the issue.
I understand how important it is for your workflow that check numbers populate correctly. I look forward to your updates after trying the steps I provided above. If you have any other concerns, please don’t hesitate to click the Reply button. We’ll be right here to help you. Take care!