Also when I share content on older posts it does not show the picture?? it just shares the writing> thanks.
1) If you’re referring to the floating buttons at the bottom of a mobile screen, you can set the Horizontal Buttons to None in Settings > AddToAny > Floating. Feel free to link to a screenshot if you’re referring to something else.
2) You’ll want to look into whichever plugin/theme is managing the relevant meta tags on each of your pages. When you ‘View Source’ on some pages in your web browser, the page HTML code oddly has home_facebook_image and http://home_twitter_image values where an actual image URL should go:
<meta property="og:image" content="home_facebook_image">
<meta name="twitter:image" content="http://home_twitter_image">