Hi, eveyone. I'm searching about a hreflang tag plug-in for WordPress. I'm working on a website and it's not working. Look at this, it's a part of HTML code: <link rel="alternate" hreflang="pt_BR" href="http://presscell.com.br" /> <link rel="alternate" hreflang="en_US" href="http://presscell.com.br" /> There are many options on web, but most of all doesn't work good. Any suggestion?