To grant the plugin access to Editor role users, you can do so easily with the help of the following custom code. If you check the code, you can see there is an action hook (sp_wp_tab_pro_ui_permission) available in the plugin, which allows you to modify the plugin’s functionality.
// Give access to the Editors
function sp_wp_tab_pro_to_editor($capability){
$capability = 'edit_others_pages';
return $capability;
}
add_filter( sp_wp_tab_pro_ui_permission, 'sp_wp_tab_pro_to_editor' );