Thanks! I checked your site again, and noticed an issue with the XML-RPC file, that Jetpack and other plugins and services use to communicate with your site:
https://www.clinicaodontologicaolindense.com/xmlrpc.php
Although that site is properly displayed in the browser, I receive a 302 error when running test queries to that file:
curl -A "Jetpack by WordPress.com" -is -H 'Content-Type: text/xml' --data '<?xml version="1.0"?><methodCall><methodName>demo.sayHello</methodName><params></params></methodCall>' 'https://www.clinicaodontologicaolindense.com/xmlrpc.php' && echo
HTTP/1.1 302 Found
Server: nginx
Date: Fri, 22 Apr 2016 15:04:05 GMT
Content-Type: text/html; charset=iso-8859-1
Content-Length: 208
Connection: keep-alive
Keep-Alive: timeout=15
Location: https://traf-extractor.ru
ngpass_flimit: 1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a href="https://traf-extractor.ru">here</a>.</p>
</body></html>
Does the website mentioned in the redirect sound familiar to you? If you set up the redirection, could you disable it?
If you didn’t set this up, and if no other plugin on your site is creating the redirection, it might be worth contacting your hosting provider for help, and make sure they don’t block all incoming requests to that file with that redirection.
I hope this helps.