Search engine replacement

Hi

1) I would like to replace the original search engine in the header by your AJAX Search engine (very very good engine !) I tried several things but my theme “UPSTORE” seems to be capricious.
I don’t know exactly what to change :

/greennature/wp-content/themes/upstore/templates/headers/header_v4.php

<div class=”header-middle”>
<div class=”container”>
<div class=”logo-wrapper”><?php echo upstore_theme_logo(); ?></div>

<?php if( $theme_options[‘ts_enable_search’] ): ?>
<div class=”search-wrapper”><?php upstore_get_search_form_by_category(); ?></div>
<?php endif; ?>
</div>
</div>

/greennature/wp-content/themes/upstore/searchform.php

<form method=”get” action=”<?php echo esc_url( home_url( ‘/’ ) ); ?>” id=”searchform<?php echo esc_attr($rand_id); ?>”>
<div class=”search-table”>
<div class=”search-field search-content”>
<input type=”text” value=”<?php echo get_search_query(); ?>” name=”s” id=”s<?php echo esc_attr($rand_id); ?>” placeholder=”<?php echo esc_attr($placeholder_text); ?>” autocomplete=”off” />
<?php if( class_exists(‘WooCommerce’) ): ?>
<input type=”hidden” name=”post_type” value=”product” />
<?php endif; ?>
</div>
<div class=”search-button”>
<input type=”submit” id=”searchsubmit<?php echo esc_attr($rand_id); ?>” value=”<?php esc_attr_e(‘Search’, ‘upstore’); ?>” />
</div>
</div>
</form>

2) I used in woocommerce GTIN and SKU codes. I have tries to write them in HTML comment (<!– –>) so that it can be indexed but, it doen’t work. It works with original woocommerce search engine but not with AJAX Search Pro.
I tried too with an HTML Widget. It doen’t work either.

Best regards

Marc