回声知识库Wordpress插件的问题

I use echo KB WordPress plugin to show my website Faqs. but the problem is I have 7 different categories and plugin supports only 6 categories for displaying items in tabs layout and when you add 7th category its face automatically changes to the dropdown menu, not tabs. so I want to have 7 tabs without converting to the drop-down. I reviewed all PHP and JS files in this plugin and I found this JS file that I think is related to my problem ( where //dropdown begins) :

// Tabs Layout: switch to the top category user clicked on
    tabContainer.find( navTabsLi ).each(function(){

        $(this).on('click', function (){
            tabContainer.find( navTabsLi ).removeClass('active');

            $(this).addClass('active');

            tabContainer.find(tabPanel).removeClass('active');
            changePanels ( $(this).index() );
            updateTabURL( $(this).attr('id'), $(this).data('cat-name') );
        });
    });

    // Tabs Layout: MOBILE: switch to the top category user selected
    $( "#main-category-selection" ).change(function() {
            tabContainer.find(tabPanel).removeClass('active');
            // drop down
            $( "#main-category-selection option:selected" ).each(function() {
                var selected_index = $( this ).index();
                changePanels ( selected_index );
                updateTabURL( $(this).attr('id'), $(this).data('cat-name') );
            });
        });

    function update_query_string_parameter(uri, key, value) {
        var re = new RegExp("([?&])" + key + "=.*?(&|$)", "i");
        var separator = uri.indexOf('?') !== -1 ? "&" : "?";
        if (uri.match(re)) {
            return uri.replace(re, '$1' + key + "=" + value + '$2');
        }
        else {
            return uri + separator + key + "=" + value;
        }
    }

Echo Knowledge Base Plugin Download Page: https://wordpress.org/plugins/echo-knowledge-base/

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I was wrong that it could be a javascript code that has limited the count of tabs layout. there was a PHP file in path: echo-knowledge-base\includes\features\layouts to remove this limitation you need to change this line of code

if ( $nof_top_categories <= 6 )

I've changed number 6 to 7 and my problem has been solved.