google maps demanding different key

I have edited my tpl_main_page.php, and tpl_contact_us_default.php to present a google map, changed the lat and long., and put in the API key given by my google account where YOUR_API_KEY_HERE showed in the tpl_contact_us_default.php file.

When I open the page at
http://enterprise.terrassl.net/~callanan/contact_us.html

I get an error message saying
This web site needs a different Google Maps API key. A new key can be generated at http://code.google.com/apis/maps/.

Has anyone else had this difficulty, and can you suggest what Im doing wrong?

I have generated and installed a new key using a web site address of
http://enterprise.terrassl.net/~callanan/
instead of https://www.callananreclamation.co.uk,
and the error message demanding a new key has gone, but now nothing appears in the div box.
Any help appreciated

Ok folks...dont waste time on this enquiry..Ive abandoned this particular route to adding a google map to the contacts page.
(it came from
http://www.zenflavor.com/add-google-maps-to-zen-cart-contact-page.html )
I also looked at Mapinator, which had the unhelpul instruction "Run the configuration.sql", a file which came as part of the download.
I have NO idea how or where to "run" a .sql file so I abandoned that route as well.

If anyone knows of a user friendly way to add a google map to the contacts page, PLEASE contact me.
Since thousands of Zen installers must want to do this surely theres a way that an average user can use?

I see that the zenflavor.com google maps code is working on your site now. Is it earlier you did not enter the Google API key for the correct domain?