Hey Jim,
I have two controllers. On my iPad, when I login to the web interface (not the smart phone interface), the "Select a Device" is blank. I can tap the down arrow, tap one of my controllers and make it active that way, but on initial login, "Select a Device" is blank.
I checked from my iPhone using the smart phone site, it works normally. I also checked the non-smart phone site using my browser from my desktop, it works normally -- both controllers show. So I'm guessing the non-smart phone login isn't quite optimized for iOS devices? Or if so, then maybe this is a bug?
Once I tap the controller from the drop down arrow, however, I've not had any problems.
Thanks,