Plugin isn´t working

Good afternoon,

first, sorry for my English. The latter thanks for the great plugin that you have created.

I installed the plugin and set the features, but share by facebook can not get the default or featured images. It is also not working properly sharing by the other social networks.

When I do a scrape information in https://developers.facebook.com/tools/debug/og/object/, I get the following message appears.

Erros that Devem be corrigidos
Body Meta Tags In Your page has meta tags in the body Instead of the head. This May be Because your HTML was malformed and They fell lower in the parse tree.
Please fix este order for the tags to be usable.
Notice
Warnings That Should Be Fixed
The Property Inferred ‘og: url’ property Explicitly Should be provided, even if a value can be inferred from other tags.
The Property Inferred ‘og: title’ property Explicitly Should be provided, even if a value can be inferred from other tags.
The Property Inferred ‘og: description’ property Explicitly Should be provided, even if a value can be inferred from other tags.
The Property Inferred ‘og: image’ property Explicitly Should be provided, even if a value can be inferred from other tags.
Share App ID Missing The ‘fb: app_id’ property Explicitly Should be provided, the app ID Specify So THAT stories shared to Facebook will be Properly Attributed to the app. Alternatively, app_id can be open in September in url When the share dialog.

An example is: http://iberoamericasocial.com/software-libre-para-investigar/

Hopefully you can help me.

A hug!