When I use the button share on FB, then an old title of the survey and picture appears.

How can I get rid of it and how it can be changed so that my new title and the picture appears? I have logged off and on several times, no help and canhanged the name in options field but still wrong title and picture when shared in FB.

Facebook caches already shared urls/pages for better performance. This causes issues at time when you update the title, picture being shared or the description of the page because Facebook still shows the older version of the page.

There are several methods discussed to bypass the issue at the following URL :

http://umairj.com/146/how-to-clear-facebook-shares-cache/

Hope this helps