You can “scrobble” everything you listen to on Spotify from any device with Last.fm:
To Disconnect
Follow the steps above only this time choose Disconnect next to Spotify Scrobbling and remove access to the app as described here.
Issues with scrobbling?
You can head here to check different troubleshooting steps in case you're experiencing issues with scrobbling. Please note that the link is from the Last.fm page. In case you have troubles with it, you can run a search in the forum.
You can also check out the Last.fm Support Forums or get in touch with their support teams, if you're having trouble connecting or need help with your Last.fm account.
Didn't help? Search for more Spotify Answers, or create a new thread and ask the Community.