Basic set up, FAQ 3

I cannot set up Contact Form 7 following the instructions. I highlight and copy the code, I go to the ‘pages’edit tab of the page I want the form to appear in, I use the “Text” appearance(as opposed to the “visual”) appearance and paste the code in. When I look at the page, all I see is the message set out in FAQ 3–form not found. The solution offered in FAQ 3 (make sure you have copied the code correctly) makes no sense. How can I make a mistake in copying the code when all I’m doing is highlighting the code, right clicking, copy and pasting? what am I doing wrong?