Web2PDF add-on doesn't appear in Firefox Add-on

I don't know if Howard is having the problem anymore, but all you need to know is that at least one person is, and that person is me. I'm not Howard, but I am the one who gave you my system specs and the screenshot above.

My use case is the following: I have a paper form I want to lay out on a grid. The form must be paper because multiple unkAdobe Acrobat has no collision detection or positioning of form layouts inline with text. The same problem besets Adobe InDesign. It's the year 2017, and the most robust solutions for form layout and grid design are Web frameworks such as Bootstrap. I used to think that I could use Bootstrap or Zurb Foundation to lay out my form and have Adobe Web2PDF convert it directly. Adobe Web2PDF does not "recognize" forms; it creates them by parsing the HTML <input> and <textarea> tags directly into PDF text fields, radio buttons, etc. But Adobe Web2PDF has very limited support for CSS in general and clearly uses nothing called Gecko and nothing called Webkit in the process. Both Gecko (Firefox's layout engine) and Webkit (Safari's layout engine; Google Chrome uses either Webkit or a fork of Webkit called Blink) are excellent tools to print the Web in a reasonable approximation of what it would look like on a similar-size screen, with additional support for page margins and page breaks and print-specific CSS rules. I wanted to see if doing it through the add-on would combine Firefox printing with Adobe parsing of the HTML.

Thank you for your response, but I know all the steps you included.  This issue is that the extension named Adobe Acrobat – Create PDF appears at all.  In addition, it isn't found when I search for it! Therefore, I am not able to select the Extension in the left pane, nor go to customize to include the icon in the Firefox toolbar.

What is unusual is that on my laptop which is virtually identical to the desktop where I'm having this issue, it's there.  Is it possible for you to you tell me the file name and where it resides on my laptop so that I could copy it and paste into the proper location on my desktop.

Thank you,

Howard