Something which should never happen, happened. "Error code: -10520"

Hi,

I get the following message when I try to use the Publicize options.

Something which should never happen, happened. “Error code: -10520”

None of the options work

I have opened the debugger, it says jetpack cant get a connection;

SELF:
Array
(
[headers] => Array
(
[server] => nginx
[date] => Thu, 18 Feb 2016 20:53:48 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”:”Unknown Error”,”error_description”:”An unknown error has occurred.”}
[response] => Array
(
[code] => 400
[message] => Bad Request
)

[cookies] => Array
(
)

[filename] =>
)

blog.stephaniekomen.nl

I can read and handle instructions, but this is gobeldygook to me ??
Can anyone tell me whats wrong and what I need to do to fix it?
thanks!