Thanks to Levi Notik for this really excellent bug report, on Twitter, including a screen shot that led me straight to the problem.
As a result I expect that the app will work for some people for whom it did not work previously. Sorry for the screwup. I'll try to be more careful in the future.
If you want to give it a try, be sure you reload the app to get the new version. The version number is in the upper right corner of the page.