Some folks on Internet Explorer were having difficulty. So display method was changed. Basically we are forced to choose between easy iphone or easy internet explorer display. So because apple doesn't allow java you are not able to view on iphone or ipad at the moment, though soon we will have an app for cams.
Meanwhile, what browser and OS versions are you running?
If internet explorer, please make sure you have the latest version of java enabled. And that your security settings are at default levels in internet exploere security settings .