Hi Richard,
Please put the following code in your bp-custom.php

/**
 * Redirect to login page on accessing single media for non logged.
 */
function mpp_custom_single_media_access_restriction() {

	if ( ! function_exists( 'mpp_is_single_media' ) || ! mpp_is_single_media() || is_user_logged_in() ) {
		return;
	}
	// Redirect to login page.
	bp_core_redirect( wp_login_url() );
}

add_action( 'bp_template_redirect', 'mpp_custom_single_media_access_restriction' );

/**
 * Do not load lightbox for non logged users.
 *
 * @param array $settings settings.
 *
 * @return array
 */
function mpp_custom_filter_lightbox_options( $settings ) {

	if ( ! did_action( 'init' ) || is_user_logged_in() ) {
		return $settings;
	}

	// if we are here, user is not logged and it is after init action.

	$settings['load_lightbox'] = 0;

	return $settings;
}
add_filter( 'mpp_settings', 'mpp_custom_filter_lightbox_options' );

Currently, we don’t have filter for individual option, so we had to filter the settings array. In future, I will add a way to filter individual option too.

Please do let me know if the code works for you or not?

Regards
Brajesh

Hi Richard,
Thank you.
No problem with the delay. I am looking forward to your feedback.

Best regards
Brajesh

Hi Richard,
Thank you for the details.
I am glad it is resolved. Always happy to assist 🙂

Regards
Brajesh