There is a problem with the chrome on the mobile device. The course does not load until you rotate the device 90 degrees. All other mobile browsers will load the course normally on the device.
Hi Stas, this seems a little strange. Does the course load as expected in a desktop browser?
If it wasn't working on other mobile browsers, my best guess would be it's something to do with the CSS rules for device resolution. But seeing as it is working on other mobile browsers, I'm not sure.
Maybe try reinstalling Chrome. It could be a bug with the browser itself.
It would also be worth testing resolutions in your browser's responsive mode, such as the following in Firefox:
Menu > Web Developer > Responsive Design Mode (or Ctrl+Shift+M).