Troubleshooting your lesson: audio, camera, joining

The most common Class Spot issues come down to browser, permissions, or network. Try these checks in order.

Quick checks (60 seconds)

Browser. Use the latest Chrome or Safari. Firefox is not recommended.
Refresh the page. Press Ctrl + R (Windows/Linux) or Cmd + R (Mac).
Permissions. Click the camera/microphone icon in your browser's address bar and make sure both are Allowed for this site.
Other tabs. Close any other tab using your camera or microphone (Zoom, Meet, another Class Spot lesson).

If you still have a problem, find the closest match below.

The link does nothing or shows an error.

Make sure you copied the whole URL, including the part after the last slash.
Try opening the link in a private/incognito window. If it works there, your normal browser has a stuck cookie — clear cookies for classpot.com and reload.

The lesson loads but the room is empty.

The teacher hasn't started the lesson yet. Wait a moment and refresh.
If you're sure the teacher is in, check that you don't have two browser tabs open — close the extras.

You can't hear the other person.

Check your computer's output volume isn't muted.
Check that the right output device is selected in your operating system's sound settings (e.g., headphones vs. internal speakers).
Click the camera/microphone icon in the address bar and confirm permissions.
Try a different headset or unplugging headphones to use built-in speakers.

The other person can't hear you.

In the lesson, click your microphone icon to confirm it's not muted.
In your operating system's sound settings, make sure the right input device is selected.
Some external microphones need a Bluetooth reconnect — pair again.

Camera not visible.

Click the camera icon in the browser address bar → Allow for this site → refresh.
Check whether your camera light is on. If another app (Zoom, OBS) is using it, that app blocks Class Spot.
In privacy settings of your OS, confirm that the browser has camera access.

Video is choppy or frozen.

Check your internet speed. We recommend 5 Mbps down / 2 Mbps up minimum for stable video.
Close heavy browser tabs (streaming, video downloads).
If the connection is weak, turn your video off and continue with audio — it usually saves the lesson.

The whiteboard won't load or feels slow.

Refresh the page once with Ctrl/Cmd + R.
Check that you have at least 100 MB free in your browser cache.
Heavy files (large PDFs, many images) can slow the board — remove unused materials.

A file you uploaded won't appear for the other side.

Screen sharing doesn't start.

Browser permissions sometimes silently block screen sharing. Reload the page once and try again.
On macOS, you may need to grant your browser screen-recording permission in System Settings → Privacy & Security → Screen Recording, then restart the browser.
Firefox often struggles with screen sharing during lessons — switch to Chrome or Safari.

In-product chat — click the green chat bubble in the bottom-right of your cabinet, then Start Conversation.
Email — info@classpot.com.

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