To assist you more effectively, could you please provide a detailed description of what you see on your screen? Are there any specific error messages appearing when you create or view invoices?
In the meantime, you can try opening QuickBooks Online in an incognito window or a different browser. This allows the site to load without using saved data or extensions that might cause issues.
If you have any other questions, feel free to let us know. We’re here to help.