}

	/**
	 * Check all saved keys to ensure they're still active
	 *
	 * Outputs warnings if the key has expired or the status has changed remotely.
	 *
	 * Runs on daily cron (`llms_check_license_keys`).
	 *
	 * Only make api calls to check once / week.
	 *
	 * @since 3.0.0
	 * @since 3.4.0 Use core textdomain.
	 *
	 * @param bool $force Ignore the once/week setting and force a check.
	 * @return void
	 */
	public static function check_keys( $force = false ) {

		// Don't trigger during AJAX Requests.
		if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
			return;
		}

		// Don't proceed if we don't have any keys to check.
		$keys = llms_helper_options()->get_license_keys();
		if ( ! $keys ) {
			return;
		}

		if ( ! $force ) {
			// Only check keys once a week.
			$last_send = llms_helper_options()->get_last_keys_cron_check();
			if ( $last_send > apply_filters( 'llms_check_license_keys_interval', strtotime( '-1 week' ) ) ) {
				return;
			}
		}

		// Record check time.
		llms_helper_options()->set_last_keys_cron_check( time() );

		$data = array(
			'keys' => array(),
			'url'  => get_site_url(),
		);

		foreach ( $keys as $key ) {
			$data['keys'][ $key['license_key'] ] = $key['update_key'];
		}

		$req = new LLMS_Dot_Com_API( '/license/status', $data );
		if ( ! $req->is_error() ) {

			$res = $req->get_result();
			include_once LLMS_PLUGIN_DIR . 'includes/admin/class.llms.admin.notices.php';

			/* Translators: %s = License Key */
			$msg = __( 'The license "%s" is no longer valid and was deactivated. Please visit your account dashboard at https://lifterlms.com/my-account for more information.', 'lifterlms' );

			// Output error responses.
			if ( isset( $res['data']['errors'] ) ) {
				foreach ( array_keys( $res['data']['errors'] ) as $key ) {
					self::remove_license_key( $key );
					LLMS_Admin_Notices::add_notice(
						'key_check_' . sanitize_text_field( $key ),
						make_clickable( sprintf( $msg, $key ) ),
						array(
							'type'             => 'error',
							'dismiss_for_days' => 0,
						)
					);
				}
			}

			// Check status of keys, if the status has changed remove it locally.
			if ( isset( $res['data']['keys'] ) ) {
				foreach ( $res['data']['keys'] as $key => $data ) {

					if ( $data['status'] ) {