Mac suddenly won't open some websites, only on safe mode

Hi I need some help

Mac stop showing some websites in my particular case (www.globo.com) . I'm trying for almost 5 days and nothing. Just today by morning the website enters but for few moments after the connections with thw websites don't work. The only way to works s in safe mode. I don't know what to do to solve this.Don't know if i have to change DNS or not , because other device in my network works fine, but the mac don't.