Dear, i have one new problem.

I bought one plugin, it is not working fine, then i ask them, he said that:

{

Hi, 

you have a problem with your theme sidebar. 
In register_sidebar function you need to add the ID, like WordPress write on your codex.
About your website problem you can read this post: https://goo.gl/LvAHyV

You
can send the link of this post to theme developers to add the support
for this. If you want you can send me a copy of your theme for a test
but the probelm must be fixed from theme developer because I can edit
the file and solve the issue, but you lost all fix at first theme
update. 

Thanks.
Have a nice day 
Giuseppe 

YITH

Do not forget to follow on Twitter to be updated about our works.

Thank you!

}

here have some information:

https://support.yithemes.com/hc/en-us/articles/231922648-Ajax-Product-Filter-After-applying-a-filter-widgets-are-not-updated-or-is-not-carried-out-the-recount-of-terms

{

Ajax Product Filter - After applying a filter widgets are not updated or is not carried out the recount of terms

Many users complain that they do not see the filter or reset the widget list is not updated, the problem in most cases is this:

The problem is in the before_widget arg in register sidebar settings. The correct way to register a sidebar is: 'before_widget' => '<li id = "% 1 $ s" class = "widget% 2 $ s">', with id and class params, like you read in the WordPress Codex . Your theme use only classes and not the id.. Please, look here: https://codex.wordpress.org/Function_Reference/register_sidebar

That amends must do the theme developer otherwise the first update will lose all changes.

We advise you to check the configuration of the tab frontend here

}

can you help me? thanks

Dear very glad to say that i fix this bug now, according to documentation(wordpress register sidebar).

Default Usage

<?php $args = array(
	'name'          => __( 'Sidebar name', 'theme_text_domain' ),
	'id'            => 'unique-sidebar-id',
	'description'   => '',
        'class'         => '',
	'before_widget' => '<li id="%1$s" class="widget %2$s">',
	'after_widget'  => '</li>',
	'before_title'  => '<h2 class="widgettitle">',
	'after_title'   => '</h2>' ); ?>

now in this theme, it is this:

    # Shop Sidebar
    $shop_sidebar = array(
        'id' => 'shop_sidebar',
        'name' => 'Shop Widgets',

        'before_widget' => '<div class="sidebar-entry %2$s %1$s">',
        'after_widget' => '</div>',

        'before_title' => '<h3 class="sidebar-entry-title">',
        'after_title' => '</h3>'
    );

here   'before_widget' no id value, and after I add id="%1$s",

        'before_widget' => '<div id="%1$s" class="sidebar-entry %2$s %1$s">',
        'after_widget' => '</div>',

and i check all register sidebar no id value, I think if this is a small bug, thanks