[Plugin: WP InfusionSoft] Unclear instructions

I cannot say whether this plugin works yet because the instructions for use are so unclear.

The author says to enter the three lines of “hidden” code from the Infusionsoft form into a field for hidden code the plugin provides.

So I pasted the code. Guess what. It doesn’t work. I filled out the form and it didnt’ work.

So I decided that I maybe didnt’ understand what part of the code he wanted entered and I tried a few variations and all of them failed to work.

So either this plugin doesnt’ work or the directions need fixing.