Sure, I'd be happy to help you troubleshoot your Spotify playlist downloading issues. Here are some steps you can try:

1. Check Your Internet Connection: Spotify requires a strong internet connection to download songs. Make sure you're connected to a stable Wi-Fi network. If you're using mobile data, check if you have enough data left.

2. Restart Your Device: Sometimes, a simple restart can fix many issues. Turn off your device, wait a few seconds, and then turn it back on.

3. Update Spotify: Make sure you're using the latest version of the Spotify app. Go to your device's app store to check for any updates.

4. Check Your Spotify Premium: Downloading songs is a feature available to Spotify Premium users. Make sure your subscription is active.

5. Clear Cache: If your device's storage is almost full, it might cause issues with downloading songs. Go to Spotify's settings and clear the cache.

6. Reinstall Spotify: If none of the above steps work, try uninstalling and then reinstalling the Spotify app. Please note that this will delete your downloaded songs and you'll need to download them again.

Remember to always download your playlists while your device is charging, or at least has a good amount of battery, to prevent the process from being interrupted.

If you've tried all these steps and are still having trouble, you might want to reach out to Spotify's customer support for further assistance.