Good to hear -- I hope your connection gets sorted.
I haven't had any reports of it not working. It may be an issue with the browser. I just checked it in IE and it was working perfectly. I'd really like to know why it wouldn't load... but if I can't duplicate the problem it's very hard for me to solve.
Realize that TestMy.net is as much of a browser test as it is an internet speed test. Different browsers perform differently and can vary from version to version. Most speed tests are passively ran in the browser, TestMy.net really puts it to the test... if the browser don't hold up, neither will the test results. The results from TestMy.net can definitely point to misconfigurations in your OS as well as browser settings. My recommendation is to stick with the browser that not only performs best with my tests... but also feels faster. In my experience, IE in some cases runs faster... but actual browsing doesn't feel as snappy as Chrome or Firefox. It's all personal preference.
... the graphs here are based on very popular javascript libraries. (not saying there isn't bugs... there is ALWAYS bugs in programming even if Jesus is at the keys) It's highly compatible. If it's not loading, it may be something messed up with the browser.... and it may be causing other things to not load properly. Stick with a webkit browser like Chrome, Firefox or Safari -- your online experience will be best with those. Now, in the future... who knows... it changes all the time. ... as for IE, it seems to be sensitive and I often hear complaints about it being broken in some way or another.