Can you double check, that the "Work in offline mode" setting is disabled. If I understand correctly, it means that scrobbles will be cached locally without attempting to send them to lastfm, until it is manually disabled again, even if you have an internet connection.
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Best posts made by Dakes
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RE: Last.fm not scrobbling
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RE: Filter playlist on ID3 tag(s)?
@wimpers
You can filter playlists like this:rating:0 AND (bitrate:>320 OR bitdepth:>=16)
Valid filters are: title, name, artist, album, albumartist, performer, composer, year, originalyear, track, disc, length, genre, samplerate, bitdepth, bitrate, filename, grouping, comment, rating.
The play- & Skipcount would be quite useful to have as well. Maybe I could add them in a pull request at some point.