I am new in wordpress theme development. I am developing a theme and I used WP-Live Chat by 3CX
and Contact Form 7 Multi-Step Forms plugins in my wordpress theme. I can't figure out the actual issues. Please help- my issues are
For: WP-Live Chat by 3CX
The start chat button not working. This problem happens because of the plugin js. I contacted their support they also said plugin js not working properly. I showed them my functions wp_enqueue_scripts how I implemented. But they said they can't help more about this.
For: Contact Form 7 Multi-Step Forms
The first step data is not showing in the second step form. I contacted their support also but they also said this is js problem.

My website link
I can't figure out the issues. I included my theme js and css in functions.php like
function themename_scripts() {
wp_enqueue_script('othemename-jquery', 'https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js', array(), null, true);
wp_enqueue_style('themename-animate', get_template_directory_uri() . '/assets/css/animate.min.css', false, '1.1', 'all');
wp_enqueue_style('themename-fontawesome', get_template_directory_uri() . '/assets/css/font-awesome.min1849.css', false, '1.1', 'all');
wp_enqueue_style('themename-bootstrap', get_template_directory_uri() . '/assets/css/bootstrap.min.css', false, '1.1', 'all');
wp_register_style('othemename-owlcarousel', 'https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.0.0-beta.3/assets/owl.carousel.min.css');
wp_enqueue_style('othemename-owlcarousel');
wp_register_style('othemename-owlcarousel-theme', 'https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.0.0-beta.3/assets/owl.theme.default.min.css');
wp_enqueue_style('othemename-owlcarousel-theme');
wp_enqueue_style('themename-style', get_stylesheet_uri());
wp_enqueue_script('othemename-owlcarouseljs', 'https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.0.0-beta.3/owl.carousel.min.js', array(), null, true);
wp_enqueue_script('themename-jquerymigrate', get_template_directory_uri() . '/assets/js/jquery/jquery-migrate.min330a.js', array(), '20151215', true);
wp_enqueue_script('themename-bootstrap', get_template_directory_uri() . '/assets/js/bootstrap.min.js', array(), '20151215', true);
wp_enqueue_script('themename-theme', get_template_directory_uri() . '/assets/js/themeac31.js', array(), '20151215', true);
wp_enqueue_script('themename-extra', get_template_directory_uri() . '/assets/js/extra.js', array(), '20151215', true);
if (is_singular() && comments_open() && get_option('thread_comments')) {
wp_enqueue_script('comment-reply');
}
}
add_action('wp_enqueue_scripts', 'themename_scripts');
Is this because of I am not properly developing my theme? If not then what could be the problem. Please help.

onepress_js_settingsis not defined. I'm not sure if it's related or not with your issue. What the documentation of this chat says about integrating it? - Cadu De Castro Alvesconsol onepress_js_settingsis not defined. Either it will be a variable or a function. I do not have enough knowledge in javascript. But I am trying to find out. - Md Rashedul Islamonepress_js_settingsshould be set. Maybe you should try to deactivate all plugins to see if this error disappear. It's very common to have JS conflicts in themes. - Cadu De Castro Alves