> ## Documentation Index
> Fetch the complete documentation index at: https://help.chimeedu.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ChimeEdu Activities and Quiz Troubleshooting Guide

> Fix common problems with ChimeEdu activities — quiz join codes, map loading, assessment submission errors, flash card progress, and more.

If an activity isn't loading or a quiz code isn't working, this page covers the most common issues and how to resolve them.

<Tip>
  Most issues are resolved by simply **refreshing the page** or **trying a different browser**. If a problem persists after both, the steps below will help narrow it down.
</Tip>

## Quiz Join Code Not Working

If students are having trouble joining a live quiz with the join code, check the following:

* **Has the activity expired?** Quick Activities (temporary activities) automatically expire **8 hours** after they are created. Once expired, the join code no longer works. If this is the case, create a new Quick Activity for the session.
* **Is the code being entered correctly?** Join codes are **6 characters** long and **case-insensitive** — uppercase and lowercase letters are treated the same. Ask students to re-enter the code carefully and check for typos or swapped characters (e.g. `0` vs `O`, `1` vs `l`).
* **Has the teacher closed the quiz?** If the teacher has ended or closed the quiz session, no new participants can join. Check with the teacher whether the session is still active.

## Activity Won't Load

If an activity page fails to load or appears stuck:

1. **Check your internet connection.** Open another website to confirm you're online. A lost connection is the most common cause of a blank or spinning activity screen.
2. **Refresh the page.** Press `F5` (Windows) or `Cmd + R` (Mac) to reload. Most loading glitches are cleared this way.
3. **Try a different browser.** ChimeEdu supports the latest versions of Chrome, Firefox, Safari, and Edge. If you're using an older browser or one that isn't on this list, switch to a supported browser.
4. **Clear your browser cache.** Outdated cached data can prevent pages from loading correctly. In your browser settings, clear the cache and cookies, then reload the activity.

## Map Pins Not Showing

If you open a map activity and the pins are missing or not visible:

* **Adjust your zoom level.** Some pins may be clustered or hidden at certain zoom levels. Try zooming in and out to see if they appear.
* **Refresh the page.** A brief network hiccup during loading can prevent pins from rendering. Refreshing usually fixes this.
* **Use the List View.** If you're navigating by keyboard or can't interact with the map, click the **List View** toggle (available in map activities) to see all pins in an accessible, keyboard-operable list instead of the visual map.

<Note>
  Keyboard users can navigate all map pins using the **List View** alternative without needing to interact with the map directly. Look for the "List View" button near the top of the map activity.
</Note>

## Assessment Submission Error

If you receive an error when trying to submit an assessment:

1. **Check your internet connection first.** A dropped connection at the moment of submission is the most common cause of submission errors.
2. **Try submitting again.** In many cases, clicking Submit a second time after a brief wait will succeed.
3. **Do not close the tab yet.** If the error persists, keep the tab open and [contact support](https://app.chimeedu.com/contact) before navigating away. Your in-progress responses may be recoverable if the tab remains open.

<Warning>
  If you experience a persistent submission error, **do not close the browser tab** until you've contacted support. Your work may still be retrievable from the open session.
</Warning>

## Flash Card Progress Not Saving

If your flash card progress doesn't appear to be saving between sessions:

* **Make sure you're signed in.** Flash card progress (including spaced-repetition intervals) is only saved to your account when you are signed in. If you're studying as a guest, your progress is not stored and will be lost when you close the tab.
* **Check your account.** Sign in at [app.chimeedu.com](https://app.chimeedu.com) before opening the flash card activity to ensure progress is being recorded.

## Video Not Playing in a Study Guide

If an embedded video in a Study Guide won't play:

* **Check that your browser allows autoplay.** Some browser settings block videos from playing automatically. Look for an autoplay or permissions prompt in your browser's address bar and allow it for app.chimeedu.com.
* **Try a different browser.** Video playback behaviour differs across browsers. If a video won't play in one browser, try Chrome, Firefox, Safari, or Edge.
* **Check caption availability.** Study Guide video blocks rely on YouTube embeds. If the source video on YouTube does not have a caption track, captions won't be available on the embedded player. Contact your teacher if captions are important for your access needs.

<Note>
  If an issue persists after trying the steps above, report it using the form at [app.chimeedu.com/report-issue](https://app.chimeedu.com/report-issue). Include your browser name and version, your device type, and a brief description of what happened — this helps the team investigate and fix the issue faster.
</Note>


## Related topics

- [Fix ChimeEdu Account and Login Issues — Help Guide](/help/account-and-login.md)
- [ChimeEdu Teacher FAQs — Classrooms, Activities & Plans](/help/faq-teachers.md)
- [Getting Started on ChimeEdu: Complete Student Guide](/students/introduction.md)
- [How to Join and Play a Live Quiz on ChimeEdu Today](/students/joining-a-quiz.md)
- [Joining Your Teacher's ChimeEdu Classroom: A Guide](/students/join-classroom.md)