Cant See any code in Paypalbutton window

Hi, I wonder if u can help – The Paypal button code not appearing.

Plugin installed. settings done – redirect page done – all good.

Im using thrive themes architect to edit a page.
and added custom WP content section on page.

I go to edit the section and yes, I can see…

[Add Media ] [Add Form ] [Paypal Button ]

When I click [ Paypal Button ] a new window pops up titled “paypal button” but there is
no content in the window.

Memory good, cache is cleared and cant think why not working – any ideas?

Thanks in advance.