Hey there! Let's see if we can get those lessons loading for you smoothly. It sounds like you're encountering a bit of a hiccup, but don't worry, we'll work through it together.

First, let's try some straightforward steps:

1. Check Your Internet Connection: Make sure you have a stable internet connection. You can try disconnecting and reconnecting to your network.

2. Clear the App's Cache: Sometimes, clearing the app's cache can help resolve issues. Although this is more common on mobile devices, if there's any cache clearing option within the app, try that.

3. Update the App: Ensure you're using the latest version of the Ling app. Updates often fix bugs related to loading issues.

4. Reboot Your Device: Try restarting your Mac. This can help clear any temporary glitches.

If the problem persists, it may be useful to consider reinstalling the app. This process will ensure no corrupted files are causing the issue:

5. Reinstall the App:
- Delete the Ling app from your system.
- Restart your Mac.
- Download and install the Ling app again from the App Store.

Let me know how it goes after trying these steps, and if needed, we can explore further options!