Happy to try to help you! To be honest the WA themes and templates are very old and out of date, but it's easy enough to add social media icons without using WA's plugin. If you're getting an internal server issue in Dreamweaver, first make sure you have a testing server running and it's set up in the correct location. Also ensure you have a local copy of the database for the site. If you have a .htaccess file in your local folder, rename it to htaccess.txt or similar - the presence of this file can sometimes cause issues. See if that fixes your connection problems but let me know if not.
If you can sent me a link to the web page and let me know where you want the social media icons to appear and which ones, I can send you the HTML code and image files to add them, or happy to do it for you if you don't mind providing FTP details for your site (put these in the Private Message box below or email them to me at mwilson@linksdesign.co.uk)