With the premium plugin, you can define which image and text should show when people share your page(s). You can either set a global sharing image & text (under question 6 in the plugin), or define it individually per post or page. For the latter, please insert this information on the edit post/page-page (i.e. on the page where you write your post, at the bottom you will see a new section where you can define the sharing image and text).
If you did that, but sharing still does not take the image or text you defined:
- If you have a cache plugin installed please, disable it temporarily
- Note that the social media platforms (e.g. Facebook) first need to scrape the new sharing information from your website. They do this in regular intervals, but it is not immediate. If you want to speed things up for selected posts/pages, please enter the url of the page you want to share on https://developers.facebook.com/tools/debug/og/object/ and click on “Fetch new scrape information”. That will make Facebook scrape your site again, and you will see the updated information which image or text gets shared.
if those two points did not work, please raise a support ticket (at the top of the plugin’s settings page).