To confirm the maps are now working it seems on all browsers, both on the SURFACE, on my PC and on the iphone.
To be truthful I am unsure on what fixed the issue.
The two areas which I changed were:
1. I uploaded Google Chrome onto the SURFACE
2. I created new maps in MapPress in WORDPRESS and installed these onto the site replacing the existings MapPress maps
I then went back into the SURFACE to view in EXPLORER and the maps were working.