[Plugin: Sharebar] Issue Bar in the home page

Hi,
I’m trying to use the share bar in the home page and I inserted the php code right after the “php get header”. Please take a look here
1) It doesn’t share the entire site but only the first post, if I put the code right before the footer it will share the last post.
2)When I share a post it doesn’t get the picture
3)It’s fixed, how can I make it like in the post page?It scroll down with the page

Thanks