Something has gotten mixed up in your Jetpack Connection!

For the last few days even before I updated my website to 4.5.x, Jetpack is throwing the errors below on its Debug page.

`
Something has gotten mixed up in your Jetpack Connection!

IDENTITY_CRISIS:
Your ‘error_code’ option is set up as ”, but your WordPress.com connection lists it as ‘401’!

It looks like your site can not communicate properly with Jetpack.

SELF:
Array
(
[headers] => Array
(
[server] => nginx
[date] => Mon, 09 May 2016 10:16:00 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.ams _dfw
[strict-transport-security] => max-age=15552000
)

[body] => {“error”:”XML-RPC is not responding correctly ( 405 )”,”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:<blockquote><code>curl -A ‘Jetpack by WordPress.com’ -d ‘<methodCall><methodName>demo.sayHello<\/methodName><\/methodCall>’ http:\/\/www.rolandbal.com\/xmlrpc.php<\/code><\/blockquote><p>The answer should be:<\/p><blockquote><code><pre><?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] =>
)

`

Could someone help find the solution please? Already followed other forum answers and with our hosting support but no result yet.

https://wordpress.org/plugins/jetpack/