Hello,

Welcome aboard to the Community. Allow me to chime in and clarify things about entering sales transactions in QuickBooks Online.

The order of the line items on an estimate will depend on the service dates attached. The only workaround is to remove the dates on your products and services or download them as PDFs, then edit them. 

Here are some screenshots of the difference:

When you email your customer an estimate, and they accept or decline directly from the email, QuickBooks automatically updates the status on your behalf. I've also attached an article you can visit to learn how to change the status manually in QuickBooks: Create and send estimates in QuickBooks Online.

Let us know if you still have more questions about entering estimates by leaving a reply. We'll get back to you. Keep safe, and have a great rest of the day.