Method to set order status failed or completed based on Stripe 3D.

functions.php

add_action( 'wc_gateway_stripe_process_response', 'prefix_wc_gateway_stripe_process_response', 20, 2 );
function prefix_wc_gateway_stripe_process_response( $response, $order ){
	if($response->source->type == 'three_d_secure'){
		$order->update_status('completed', 'order_note'); ####
		//WC_Stripe_Logger::log( 'wc_gateway_stripe_process_response three_d_secure response: ' . print_r( $response->source->type, true ) );
	}elseif($response->source->type == 'card'){
		$order->update_status('failed', 'order_note'); ####
		//WC_Stripe_Logger::log( 'wc_gateway_stripe_process_response card response: ' . print_r( $response->source->type, true ) );
	}
}