WGAN-GP for Training MSG_ProGAN is failed

Hi, I read your newest version paper (v3) in arxiv, and i saw that add MSG_styleGAN information, I'm glad to see it , but I have some question about paper :

1. I think you paper said the result of showing in paper is trained MSG_ProGAN by using WGAN-GP, and trained MSG_styleGAN by using Non-saturating GAN loss with 1-sided gp. This repo is for training MSG_ProGAN but default GAN loss is **relativistic-hinge** and then I changed it to wgan-gp it failed ,because of not support for mult-scale Discriminator , Can you update this function code. (B.T.W) I implemented by myself but I don't right or false)

2. why default using **relativistic-hinge** not **WGAN-gp**