Outlook plugin 15-days trial cannot login

Outlook plugin 15-days trial cannot login

Hi,
I downloaded and successfully installed the Outlook plugin 15-day trial.
I am using the free ZOHO CRM, and Outlook 2010 under W7 (64b).
The plugin seems to be installed correctly.
When I try to login using either my username & password, i get the error message:
"You must specify a valid username and password"

I tried to activate the Outlook for my user (admin), but the error is that I i exceeded my licenses.

So, how can I test the Outlook plugin under the free ZOHO CRM edition?

Thanks,
--Rafi