3D FlipBook - 3D Flipbook icon does not appear in the text editor of my new post

My main issue is that I am trying to get my flipbook to open in full screen mode as people are getting annoyed having to find the toolbox to increase its size. I noticed the manual talks about putting the flipbook in a post rather than a new page. It looked good as the next step seemed to address size - but I followed the steps of the manual and do not see the 3D Flipbook icon so can do nothing.

Past queries refer to shortcodes, but I cannot click on them to find out more. Something strange about this forum site. All those questions and no visible answers.

Not even an email notification of responses.