downloading new program after trial period

[cotrain]

I've been downloading a new program after the trial period is over for a long time. Recently i attempted to do so again after the trial period is over and i got a message that says"Evaluation period has expired. Please purchase an activation key if you found this application useful. You may still use the free functionally without any restrictions. i get the same message on mac as well. How do i get a key?

[Woodstock]

When you do not have a permanent key, you periodically have to re-apply the beta key to re-activate the 30-day trial. The current beta key expires in about 10 days, at which time it will be replaced.