We're having the same issue on our end.  Invoices take forever to load then they load with errors and missing information. 

I have been having the same issue for 2 hours now.  After a very long wait time, I can print an invoice but no line items at all are listed. Only the total due. PLEASE HELP!

lots of us having the same issue. QB 'working on it'. UGH! I guess there's never a good time to have a problem. 

Hello everyone,

We're aware that some QuickBooks Online users are currently experiencing errors when viewing or printing invoices. Our engineers are working to fix it as soon as possible.

We’ll share updates as soon as we learn more. You may also check for updates on your end from time to time through this link: https://status.quickbooks.intuit.com/

Thank you for your understanding while we're working on a fix.