Problems conecting wordpress

this is the debugger message:

SELF:
Array
(
[headers] => Array
(
[server] => nginx
[date] => Sat, 12 Dec 2015 09:19:08 GMT
[content-type] => text/plain;charset=utf-8
[connection] => close
[expires] => Wed, 11 Jan 1984 05:00:00 GMT
[cache-control] => no-cache, must-revalidate, max-age=60
[pragma] => no-cache
[x-hacker] => Jetpack Test
[x-ac] => 3.fra _dfw
)

[body] => {“error”:”XML-RPC is not responding correctly ( 401 )”,”error_description”:”It looks like XML-RPC is not responding correctly. Please make sure XML-RPC is turned on for your site and is set up to respond to all content types. You can test this yourself by running the following command from the command line:

curl -A 'Jetpack by WordPress.com' -d '<methodCall><methodName>demo.sayHello<\/methodName><\/methodCall>' http:\/\/www.apartamentconfort.ro\/xmlrpc.php<\/code><\/blockquote><p>The answer should be:<\/p>

<?xml version="1.0" encoding="UTF-8"?>\n<methodResponse>\n  <params>\n    <param>\n      <value>\n      <string>Hello!<\/string>\n      <\/value>\n    <\/param>\n  <\/params>\n<\/methodResponse><\/pre><\/code><\/blockquote>"}
    [response] => Array
        (
            [code] => 400
            [message] => Bad Request
        )

    [cookies] => Array
        (
        )

    [filename] => 

any solution?

Your site appears to be properly connected to WordPress.com at the moment. Did you manage to solve the issue by yourself?

Let me know if you have more questions!

is it possible that indexing my posts by WordPress/Jetpack causing so many queries that database shutdown? (database has almost 14000 posts)

No, Jetpack actually synchronizes and indexes your posts gradually to avoid putting too much pressure on your database.