We truly understand how important for you as a business owner to send a reliable and accurate total invoice amount, NextLevelFence.

I agree with the answer of the previous support provided in this thread that, there's a possibility when the browser contains many frequently accessed page resources, it can lead to errors or unexpected responses. With this, we can perform certain troubleshooting actions to sort out the issue.

Let's start by accessing your QBO account via a private browser window. This will prevent websites from utilizing cookies and will not save any browsing history.

To open an incognito window, use the following keyboard shortcuts based on your browser:

• Safari: Command + Option + N
• Google Chrome: Ctrl + Shift + N
• Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + N

For additional information, there's a new update with the invoices and estimates in QuickBooks Online that may also affect the performance of the software as of the moment.

If you're now able to view the total amount of the invoice number while using the private browser, you can now clear your browser's cache by following the instructions in the article, clear cache and cookies to fix issues when using QuickBooks Online. Otherwise, you can contact the live expert support as they have a lot of tools to address this matter directly.

Furthermore, if the issue has already fixed, you can check out this article to personalize your invoices professionally: Customize invoices, estimates, and sales receipts in QuickBooks Online.

Lastly, if you're looking for additional support to expand your knowledge of managing invoices up to reconciling transactions in QBO effectively, we recommend reaching out to our QuickBooks Live Expert Assisted service. They're ready to help understand and guide you in managing each transaction.

Customers are so important for us, and they're the precious one in a business. In case that you have any other queries about generating an invoice or any invoice related, we're passionately active to address it effectively.