To see if there are any errors, do the following:
- In Chrome, go to the screen in question
- Shit + Control + i (windows) or Command + Option + i (osx)
- Click the Console label of the new Developer tools panel that opened
- Reload/refresh the screen (Ctrl + R or Command + R (osx))
- do whatever you think is not working
- look in the Developer tools panel, is there any red text?
- if so, take a screenshot