Map is a white space

Hi guys, using your Map Plugin as it seems to the easiest one to configure to my requirements.

However on inserting the map I only get a white space (the correct size space) with a small link to ‘Google Maps Plugin’ shopping cart of some description.

http://testing.timberwindows.co.uk/case-studies-index/

I would appreciate any help or guidance you can provide.

Kind regards,

Stu

https://wordpress.org/plugins/google-maps-ready/