Joomla circle hover module works but showing one image

I set up the module with the indication you gave in https://pcmshaper.com/doc/ps-circle-hover-effect-documentation/13

but I had no luck at all making it work with the tree images. It onle shows one.

I attach a printpage view

The set up I put in the module, is:

For Image 1

First Cssbox Background Image: images/banners/hover-effect1.png

First Cssbox Title: Título 1

First Cssbox Description: Descripcion 1

Button Text: Mas Info...

Link of Button Text: #

For Image 2

First Cssbox Background Image: images/banners/hover-effect1.png

First Cssbox Title: Título 2

First Cssbox Description: Descripcion 2

Button Text: Mas Info...

Link of Button Text: #

For Image 3

First Cssbox Background Image: images/banners/hover-effect1.png

First Cssbox Title: Título 3

First Cssbox Description: Descripcion 3

Button Text: Mas Info...

Link of Button Text: #

If an administrator contacts me via email I can send him an acces to the website in order to see what is wrongly configures.

I thank a lot in advance for the help.