Hello, @cbcavnar.
I completely understand how important it is for you to deliver the invoice without any inconvenience. Rest assured that I will do everything to fix this.
As of today, there's still an ongoing investigation (INV-97274) where the QuickBooks Online (QBO) invoice cannot deliver successfully. Our product engineers are searching this issue and hope to have an update soon.
We will keep you informed as we receive updates. You can also check for any outages on your end by using this link:: https://status.quickbooks.intuit.com/.
Thank you for understanding while we're working on a fix.
