Hi, I've been using VOX in my iphone and I don't have any problem scrobbling. However, I can't seem to do so by using VOX for Mac Version 2.8.24(Build 2899.24).
If I go to Preferences->Sources I see my last.fm user info correctly, both options checked (Enable scrobbling and Send current track info) but VOX is not scrobbling anything at all.
I tried the solution mentioned here http://support.coppertino.com/discussions/vox-for-mac/3349-lastfm-scrobbling-issues but it didn't work.
I'm using Yosemite 10.10.5 and Chrome browser.
Thank you!