Hello @Nuera,
Thanks for writing in!
By default, the animation loop is enabled. To resolve your issue, the slider element needs to be modified. I went ahead and resolve your issue by adding this code in your child theme’s functions.php file:
// Custom Slider element
// =============================================================================
function custom_x_shortcode_slider( $atts, $content = null ) {
  extract( shortcode_atts( array(
    'id'             => '',
    'class'          => '',
    'style'          => '',
    'animation'      => '',
    'slide_time'     => '',
    'slide_speed'    => '',
    'slideshow'      => '',
    'random'         => '',
    'control_nav'    => '',
    'prev_next_nav'  => '',
    'no_container'   => '',
    'touch'          => '',
    'pause_on_hover' => '',
    'animationLoop'       => true,
  ), $atts, 'x_slider' ) );
  static $count = 0; $count++;
  $id            = ( $id            != ''     ) ? 'id="' . esc_attr( $id ) . '"' : '';
  $class         = ( $class         != ''     ) ? "x-flexslider-shortcode-container " . esc_attr( $class ) : "x-flexslider-shortcode-container";
  $style         = ( $style         != ''     ) ? 'style="' . $style . '"' : '';
  $no_container  = ( $no_container  == 'true' ) ? '' : ' with-container';
  $js_params = array(
    'animation'    => ( $animation      == 'fade'  ) ? 'fade' : 'slide',
    'animationLoop'  => false,
    'slideTime'    => ( $slide_time     != ''      ) ? $slide_time : '7000',
    'slideSpeed'   => ( $slide_speed    != ''      ) ? $slide_speed : '600',
    'controlNav'   => ( $control_nav    == 'true'  ),
    'prevNextNav'  => ( $prev_next_nav  == 'true'  ),
    'slideshow'    => ( $slideshow      == 'true'  ),
    'random'       => ( $random         == 'true'  ),
    'touch'        => ( $touch          != 'false' ),
    'pauseOnHover' => ( $pause_on_hover == 'true' )
  );
  $data = cs_generate_data_attributes( 'slider', $js_params );
  $output = "<div class=\"{$class}{$no_container}\">"
            . "<div {$id} class=\"x-flexslider x-flexslider-shortcode x-flexslider-shortcode-{$count}\" {$data} {$style}>"
              . '<ul class="x-slides">'
                . do_shortcode( $content )
              . '</ul>'
            . '</div>'
          . '</div>';
  return $output;
}
add_action('wp_head', 'update_slider_element');
function update_slider_element() {
  remove_shortcode( 'x_slider' );
  remove_shortcode( 'slider' );	
  add_shortcode( 'x_slider', 'custom_x_shortcode_slider' );
  add_shortcode( 'slider', 'custom_x_shortcode_slider' );	
}
// ====================================================
For reference, you can check out this thread:
Please check your slider now.