Filing bug reports


If you're experiencing issues with puzzles or accounts, please submit a request through our contact form!

If you can give us as many details as possible in your initial bug report, we can get back to you sooner with a resolution.

For example, if you're seeing a potential bug on a puzzle, please specify:

  • Which course - lesson/unit - level - puzzle(s) this is occurring for
  • The email address associated with your account
  • The students' usernames who are seeing issues with the site, and the sections they're in
  • A screenshot or screen recording

For certain issues, we may also ask you to provide screenshots of what code blocks you're using, or provide screenshots of the Javascript console. 

How to access the Javascript console

Modern web browsers provide a Javascript console, that allows developers to see errors or warnings that are occurring behind-the-scenes on a webpage, which are useful for troubleshooting bugs. You can use keyboard combinations listed below to open the console panel, shown here in a screenshot from a puzzle:


In Chrome: press Ctrl + Shift + J on a Windows computer (or Chromebook), or Cmd (command) + Shift + C on a Mac.

In Safari: press Cmd + Opt (option) + C.

In Firefox: press Ctrl + Shift + J on a Windows computer, or Cmd + Shift + J on a Mac.

In Internet Explorer: press F12, then click the 'console' tab.

If the keyboard commands don't work for you to open the console, try clicking on the 3 stacked dots in the top right corner of a Chrome window:



Then click on "More Tools" -> "Developer Tools":




You can also find the Javascript console in this manner on a Mac, by clicking "View" at the top of your view here:


How to take screenshots

On a Mac:

  • Press command + shift + 3 for a full screenshot of your entire display
  • Press command + shift + 4 to take a partial screenshot
  • Screenshots will be saved to your desktop

On a Windows computer:

  • Press the PrtScn key on your keyboard to save a screenshot to your clipboard, which can be pasted into a document for saving.
  • Windows 10 computers will come default the Snipping tool installed. This tool can be used to take partial screenshots.

On a Chromebook:

  • Press Ctrl + F5, or Ctrl + this key: 


  • The screenshot will pop up as a notification, and there's a "Copy to clipboard" button in this notification, which you can paste into a document or email for sharing.

On an iPad:

  • Press the top button and the volume button at the same time, to save a screenshot to your Photos.
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