Hi @percysgrowroom,

I think you should use this plugin, put the widget before the [wpforo] shortcode in the forum page editor:

https://wordpress.org/plugins/amr-shortcode-any-widget/

You should contact this plugin developers and ask them to help you to only show this widget on mobile pages.

Or you can put this code into the functions.php of your current active WordPress theme. This will add new sidebar in Dashboard > Appearance > Widgets admin page, so the widgets in this sidebar will be only displayed on the forum top area on mobile devices:

function wpforo_custom_sidebar() {
    register_sidebar( array(
        'name'          => __( 'Forum Top Mobile Sidebar', 'textdomain' ),
        'id'            => 'mobile-sidebar',
        'description'   => __( 'Widgets in this area will be shown on forum top for mobile only.', 'wpforo' ),
        'before_widget' => '<li id="%1$s" class="widget %2$s">',
        'after_widget'  => '</li>',
        'before_title'  => '<h2 class="widget-title">',
        'after_title'   => '</h2>',
    ) );
}
add_action( 'widgets_init', 'wpforo_custom_sidebar' );


function wpforo_custom_sidebar_area() {
    if( function_exists('is_wpforo_page') && is_wpforo_page() ){
        if ( !is_active_sidebar( 'mobile-sidebar' ) || !wp_is_mobile() ) return;
        echo '<div class="wpforo-top-sidebar">';
        dynamic_sidebar( 'mobile-sidebar' );
        echo '</div>';
    }
}
add_action( 'wpforo_top_hook', 'wpforo_custom_sidebar_area' );

BTW, you can use Code Snippets plugin to add custom codes.

This is fantastic @robert. Only small change I would make is H2 class the same as the normal sidebars (widget-title) so that any styling css that we may have done is uniform.