If the ClassDojo app is crashing on your iPhone, follow these steps to troubleshoot and resolve the issue:

Restart the App

1. Swipe up from the bottom of the screen (or double-click the Home button if your iPhone has one) to access the app switcher.
2. Find the ClassDojo app and swipe it up to close it completely.
3. Relaunch ClassDojo by tapping its icon on the home screen.

Update the App

1. Open the App Store on your iPhone.
2. Tap on your profile icon in the top right corner.
3. Scroll down to see available updates. If ClassDojo is listed, tap "Update" next to it.

Check for iOS Updates

1. Go to Settings on your iPhone.
2. Scroll down and tap General.
3. Tap Software Update. If an update is available, tap Download and Install to update your iOS.

Reinstall the App

1. Locate the ClassDojo app on your home screen.
2. Press and hold the app icon until it jiggles.
3. Tap the "X" or "Remove App" to delete it.
4. Open the App Store, search for ClassDojo, and download it again.

Check Device Storage

1. Go to Settings on your iPhone.
2. Tap General, then iPhone Storage.
3. Check if you have enough storage available. If storage is low, consider deleting some unused apps or files.

Reset Settings

1. Go to Settings > General > Reset.
2. Select Reset All Settings. This will revert your settings but won't delete your data.

If none of these steps resolve the issue, consider reaching out to ClassDojo support for further assistance. They may have information on known issues or a bug that requires a specific fix.