I can't activate Premiere Pro CC trial after successful installation on my macbookpro

When I try to launch Premiere Pro CC trial, I just get a screen saying that I'm not conected to the internet or that my clock is set incorrectly which might cause a connection error. My clock is set to automatic for timezone and internet connection is working fine.

I've retried many times without any luck. Anyone know the answer to this problem?

Thanks

Tim