You're in good hands, DMEM.
I want to provide you with accurate assistance, and to achieve this, may I ask what's the error message you've received when sending your invoice? Any additional details would help us resolve this matter accordingly.
In the meantime, we can open your QuickBooks Online (QBO) account using a private browser. It could help us detect any existing issues with your regular browser.
Here are the keyboard shortcut keys for opening a private session:
- Safari: Command + Option + P
- Google Chrome: Ctrl + Shift + N
- Firefox or Internet Explorer: Ctrl + Shift + P
If you don't encounter any errors when sending an invoice using a private session, it indicates an issue with your regular browser. Let's fix this by clearing your browser's cache and cookies.
However, if the issue persists, I recommend using another supported browser.
Additionally, you may also personalize your sales forms. It would allow you to add or hide information and modify the look of your forms according to your needs. You may check this article as your reference: Customize invoices, estimates, and sales receipts in QuickBooks Online.
Kindly provide an update or ask for additional assistance by replying to this thread regarding your invoice. I'm one click away. Take care.