No sites breakdown in usage stats for Mac

I'm using Flock on a mac, but my stats aren't separating anything out beyond Mail, RescueTime and Finder. So my Apps&Sites usage is currently 84% 'Other', which I'm fairly certain is all web-browsing in Flock.
Why isn't RescueTime recording the sites breakdown? I've only been using it for a day, but it's obviously collecting data - do I need to configure something to get it to recognise Flock/site stats?
 
sad I’m frustrated
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