How long does it take for Clicky Plugin to start tracking

I just uninstalled the manual tracking code from my wordpress website and installed the Clicky Plugin instead.

But now I see zero traffic and although it's the middle of the day and I had traffic showing up on Clicky earlier today, now the report is telling me I haven't had any traffic today.

Should I wait a day or is there a problem I should investigate.

Thank you

The tracking must be immediate. Something is not right there.