Wp embed Facebook is the best plugin. I am the co author of that plugin.

Google will show duplicate content warning if canonical link is missing from head. Its look like for some reason rel=”canonical” is missing from your head. Which version you are using? In our latest version canonical is present:

I think simplest step would be de-register AnsPress hook and then add your hook copying the method with applying your modifications.

post_parent in answers link answer with question. You are not able to see because while importing some default meta may be not created. To fix it go to wp-admin->anspress->options->tools and run all tools

Thank you for answer! That’s very cool App! I will buy new plugin when i get money! I am trying to create new post, but i get error on the left-bottom, cheating are we?!

Not now but many be in near future

Check this out: How to add a PDF upload field in AnsPress question form?

You can edit question to stories from translation file. Use translation editor plugins.