nowstream.club may ask for notification permission, if you clicked yes, you would get popups using chrome after that. If you get them, follow these steps. Firstly type this into address bar chrome://settings/content/siteDetails?site=https%3A%2F%2Fnowstream.club%2F .After that go to notification box (bell icon) then set to blocked.If the chrome settings does not work, try to upgrade chrome to a newer/newest version