It does not seem to work in Microsoft Internet Explorer (IE) 11. There just shows a whitish blank area where the map is suppose to be. I cannot even type in the address. Does IE need to be updated or maybe a setting (example pop-window) need to be enabled?
(Tried to attach screenshot but keeps on asking for dimensions of photo etc.)
I have tested the Internet Explorer (IE) 11 from my end and it seems to work well. You may want to try and check if your current IE is this
Meanwhile, could you try on other browsers (i.e. Chrome or Mozilla etc.).
Yup exactly same version of IE (maybe the solution is an update patch).
Tried Chrome Version 56 - seems to work except that the colours do not match the legend (shows green shading coverage area whereas Legend shows pink for 4G and Grey for 3G).