Thanks for getting in touch!
We understand you are saving music via the Webplayer. Is this correct? Could you try to download Spotify from this page to see if the same thing happens there?
If you can't download and install Spotify due to restrictions on your network, then we're afraid that this would explain as well why you can't use certain features of the Webplayer.
Let us know what the result is, if you can install Spotify 🙂
Have a nice day.