Greetings @GreenBridge!

In sending an invoice to your customers, make sure to select the customized invoice form style. Let me help you how.

Open an invoice transaction, then click the Customize option at the bottom of the page and choose the default form style.

You can refer to the screenshot below for your visual reference.

If you still get the same result, I recommend contacting our Customer Care Team. They have tools that can help them investigate further why you can't get rid of your Shipping field and help you from there.

You can always get back to us here in the Community if you have any other questions.