Sure, I can help you with that. Here are some steps to fix collaborative playlist issues on Spotify:

1. **Check your permissions**: Ensure that you have the necessary permissions to edit the playlist. If you aren't the creator of the playlist, you may not have the rights to make changes.

2. **Update your app**: Make sure that your Spotify app is updated to the latest version. Sometimes, older versions of the app may have bugs that can cause issues.

3. **Re-login to your account**: Try logging out and logging back into your Spotify account. This can help refresh your account and may resolve any issues.

4. **Check the playlist settings**: If you're the owner of the playlist, make sure that the 'Collaborative Playlist' setting is turned on.

5. **Check your internet connection**: A poor internet connection could cause issues with Spotify's functionality. Try switching to a different Wi-Fi network or use mobile data to see if that resolves the issue.

6. **Reinstall the app**: If none of the above solutions work, try uninstalling and reinstalling the Spotify app. This can help reset the app's settings and may fix any issues.

Remember to always save your work before trying these troubleshooting steps, as some of them may cause you to lose unsaved changes.