directory plugin - slug and display issues


i am having the following issues with the listings/directory plugin, please see the urls for examples.

- i cannot find how to change the slug from 'listings', to 'directory'. i have edited the slug of the page but this has made no difference, /directory redirects to /listings.
- there is no page title displayed in list view.
- i have strange text above the title block. 'ListingsListings'.
- listing detail. can the map be set to a percentage width so it is responsive?

wpmu have been granted support access to the site.

thank you.