Hi there! I understand you're having trouble seeing or downloading your purchased items on the Melon app. Let's get this sorted out together.

To start, could you please tell me:
- Are you using the Melon app on your Windows device directly, or through a web browser?
- Have you already tried downloading the items before? If so, did you get any error messages or did the download just not start?
- Is your app or desktop client updated to the latest version available?

Meanwhile, here are a few common steps to fix this issue on a Windows device:

1. Use the Melon Windows Desktop Client:
Unlike on mobile, downloading purchased MP3s or content often requires the Windows desktop client of Melon. If you’re trying through a browser or mobile app, downloads might not work properly. Make sure you have installed the official Melon desktop client from their official site.

2. Log into Your Account:
Ensure you’re logged into the same Melon account you used to make the purchases. Sometimes content won't show or be accessible if you’re in a different account.

3. Check Internet Connectivity:
Ensure your Windows device has a stable internet connection – downloads won’t start if connectivity is spotty.

4. Check Download Folder Permissions:
On Windows, sometimes permission settings prevent apps from saving files. Check that the Melon app has permission to write in the default download location.

5. Try Redownloading Within the App:
If your items show as 'purchased' but the download doesn't start, try to "refresh" your purchase list or re-initiate the download from within the desktop client.

If these don't resolve the issue, let me know if you've tried these steps and any specific errors you might see. That way, I can guide you to more advanced troubleshooting or alternative fixes.

Are you able to let me know a bit more about your setup and what you’ve tried?