Backgroud does not show the whole image

Hello guys,

In a page that I created with the plugin of yours (http://idiomas.proddigital.com.br/guia-ingles-winner-fb/), the background shows the image
Http://idiomas.proddigital.com.br/wp-content/uploads/sites/4/fundo-guia-landing_page.jpg in full (the width of the image fit the width of the desktop screen), but after the update Of the plugin, the image seems to be much larger than the width of the screen.

In the “Background Image Display” option “Fixed” is selected which is the option already selected before.

Please, can you help me identify the problem? Leave the image on the same width as the device

I thank you.
Rodrigo Carlos