Problem upgrading from Php5.5 to Php7

Please remove this code from your my-custom-functions.js file:

/**
 * Enqueue custom functions script
 */
function meteorite_child_custom_functions() {
	wp_enqueue_script( 'meteorite-child-custom-js', get_stylesheet_directory_uri() . '/js/my-custom-functions.js', array('jquery'), '', true );
}
add_action( 'wp_enqueue_scripts', 'meteorite_child_custom_functions' );

If I’m watching your file, it is. Please see this link. view-source:http://tuyograf.com/wp-content/themes/meteorite-child/js/my-custom-functions.js?ver=4.9.5

Topbar phone clicking does not work.

Did you had a topic where you wanted this to be clickable? The JS code inside of your my-custom-functions.js only applies the tel-link to the contact widgets on your footer and contact page.

Child theme css file is empty. The codes have not been imported.

Of course it is empty. If you want the code from the Custom CSS panel to be inside of your child themes style.css you have to cut and paste them in. The Customizer Export/Import plugin is only to get the same settings inside of the Customizer as before. This doesn’t do anything with your files.

You have to paste this to the bottom of your functions.php file in your child theme

/**
 * Topbar
 * from /meteorite/inc/functions/functions-header.php
 */
if ( ! function_exists('meteorite_nav_topbar') ) :
function meteorite_nav_topbar() {
	if ( get_theme_mod('topbar_type', 'none') != 'none' ) {

		$claim = '';
		if ( get_theme_mod('claim', 'Display your clame here.') != '' ) {
			$claim .= "<span class='claim'>" . esc_html(get_theme_mod("claim", __("Display your claim here.", 'meteorite'))) . "</span>";
		}
		$contact = '';
if ( get_theme_mod('tel', '+1 (0) 999-000') != '' ) {
  $contact .= "<a href='tel:+9005423141341'><span class='tel'>" . esc_html(get_theme_mod("tel", "+1 (0) 999-000")) . "</span></a>";
}
		if ( get_theme_mod('email', '[email protected]') != '' ) {
			$contact .= "<a href='mailto:" . antispambot(sanitize_email(get_theme_mod('email', '[email protected]'))) . "'><span class='email'>" . antispambot(sanitize_email(get_theme_mod('email', '[email protected]'))) . "</span></a>";
		}
		$social = '';
		if ( get_theme_mod('social-media-one', 'www.facebook.com') != '' ) {
			$social .= "<li><a href='" . esc_url(get_theme_mod('social-media-one', 'www.facebook.com')) . "' target='_blank'></a></li>";
		}
		if ( get_theme_mod('social-media-two', 'plus.google.com') != '' ) {
			$social .= "<li><a href='" . esc_url(get_theme_mod('social-media-two', 'plus.google.com')) . "' target='_blank'></a></li>";
		}
		if ( get_theme_mod('social-media-three', 'www.youtube.com') != '' ) {
			$social .= "<li><a href='" . esc_url(get_theme_mod('social-media-three', 'www.youtube.com')) . "' target='_blank'></a></li>";
		}
		if ( get_theme_mod('social-media-four', 'twitter.com') != '' ) {
			$social .= "<li><a href='" . esc_url(get_theme_mod('social-media-four', 'twitter.com')) . "' target='_blank'></a></li>";
		}
		if ( get_theme_mod('social-media-five', 'linkedin.com') != '' ) {
			$social .= "<li><a href='" . esc_url(get_theme_mod('social-media-five', 'linkedin.com')) . "' target='_blank'></a></li>";
		}
		if ( get_theme_mod('social-media-six', 'pinterest.com') != '' ) {
			$social .= "<li><a href='" . esc_url(get_theme_mod('social-media-six', 'pinterest.com')) . "' target='_blank'></a></li>";
		} ?>
		
		<div class="topbar">
			<div class="container">
				<div class="row">
					<?php if ( get_theme_mod('topbar_type', 'none') == 'topbar_1' ) { ?>
						<div class="contact-field contact-field-left col-md-8">
							<?php echo $contact; ?>
						</div>
						<div class="social-icons social-nav social-nav-right col-md-4">
							<nav>
								<ul>
									<?php echo $social; ?>
								</ul>
							</nav>
						</div>
					<?php } elseif ( get_theme_mod('topbar_type', 'none') == 'topbar_2' ) { ?>
						<div class="social-icons social-nav social-nav-left col-md-4">
							<nav>
								<ul>
									<?php echo $social; ?>
								</ul>
							</nav>
						</div>
						<div class="claim-field claim-field-right col-md-8">
							<?php echo $claim; ?>
						</div>
					<?php } elseif ( get_theme_mod('topbar_type', 'none') == 'topbar_3' ) { ?>
						<div class="contact-field contact-field-left col-md-6">
							<nav>
								<?php echo $contact; ?>
							</nav>
						</div>
						<div class="claim-field claim-field-right col-md-6">
							<?php echo $claim; ?>
						</div>
					<?php } elseif ( get_theme_mod('topbar_type', 'none') == 'topbar_4' ) { ?>
						<div class="topbar-nav topbar-nav-left col-md-8">
							<nav>
								<?php if ( has_nav_menu('topbar') ) {
									wp_nav_menu( array('theme_location' => 'topbar', 'menu_id' => 'topbar-menu', 'depth' => 1 ) ); ?>
								<?php } ?>
							</nav>
						</div>
							<div class="social-icons social-nav social-nav-right col-md-4">
							<nav>
								<ul>
									<?php echo $social; ?>
								</ul>
							</nav>
						</div>
					<?php } ?>
				</div>
			</div>
		</div>
		<?php
	}
}
endif;

This is overwriting the function that creates the topbar.

Try this CSS to remove one icon and the additional padding that causes the menu to break.

.topbar a:nth-child(1) {
  display: inline;
  padding: 0;
}
.topbar a:nth-child(1)::before {
  content: "";
}