Only works on one page

I downloaded the plugin to test to decide to buy on a site being built.

I created a popup on home page and on another [About] using same mailmunch form using exact same code. I also created one in a layout part (repeated on additional pages) linking to same form. It works fine on the home page in both instances. Yet on additional pages using exact same code in the first instance and since the layout part is identical on all pages the pop up does not work on the other pages.

I need to create additional pop up forms but need to resolve or cannot purchase.

Any help is appreciated.

Bill