Hi,

Thank you for writing, I hope you are doing well.

Your issue seems to be related to a bug we just found in the latest version of the theme. Can you try replacing all the code inside your functions.php file with the following? You can find the file inside your wp-content/flatbase folder, or edit directly in “Appearance > Editor”.

	<?php
	add_action( 'after_setup_theme', 'nice_theme_demo_pack_bbpress_go_home_youre_drunk' );
	/**
	* Prevent bbPress from printing out content during the importer's request.
	*
	* @since 2.0.0
	*/
	function nice_theme_demo_pack_bbpress_go_home_youre_drunk() {
	if ( ! nice_doing_ajax() ) {
	return;
	}
	if ( empty( $_POST['action'] ) || 'nice_theme_import_demo_pack' !== wp_unslash( $_POST['action'] ) ) {
	return;
	}
	check_ajax_referer( 'play-nice', 'nice_demo_import_nonce' );
	remove_action( 'admin_menu', 'bbp_admin_menu' );
	remove_action( 'admin_init', 'bbp_admin_init' );
	remove_action( 'admin_head', 'bbp_admin_head' );
	remove_action( 'admin_notices', 'bbp_admin_notices' );
	remove_action( 'custom_menu_order', 'bbp_admin_custom_menu_order' );
	remove_action( 'menu_order', 'bbp_admin_menu_order' );
	remove_action( 'wpmu_new_blog', 'bbp_new_site', 10, 6 );
	}
	/**
	* Flatbase by NiceThemes.
	*
	* Init NiceFramework - PLEASE DO NOT EDIT THE LINES BENEATH.
	*
	* @package Flatbase
	* @author NiceThemes <hello@nicethemes.com>
	* @license GPL-2.0+
	* @link http://nicethemes.com/theme/flatbase
	* @copyright 2016 NiceThemes
	* @since 1.0.0
	*/
	// If this file is called directly, abort.
	if ( ! defined( 'WPINC' ) ) {
	die;
	}
	/**
	* Init NiceFramework - PLEASE DO NOT EDIT THE LINES BENEATH.
	*/
	require_once ( get_template_directory() . '/engine/bootstrap.php' );
	/**
	* You can add your code below =)
	*/

view raw flatbase-fix-ajax-issues.php hosted with by GitHub

Please let us know if this helps.

We’re including these changes in the upcoming version which is already submitted to ThemeForest.

Best,
Juan.