I try use Microsoft Edge and Firefox in PC, also use Safari in IPad, it has the same issue. However, I create a new account to play it, it can play in new account, I believe it is a bug
I can't play comix harem in Nutaku. when click continue play button, the browser(chrome) shows "loading game" at first, after a while, this shows "www.nutaku.net refused to connect." in browser. It happens every day. I clean the browser cache; it still has the issue. Now I can't play it anymore.