Activation of 14-day trial

Hello. I just downloaded a trial version of Parallels and tried to add Windows. It stopped downloading Windows. I was told I need an activation key. However, I do not have one. I have tried to find a link about where to find an activation key, but simply get sent back to the page saying "try/buy" etc.

How can I find my activation key to make sure I like Parallels before I purchase it?

 

We request you share the screenshot of the window which is requesting you for a key to check and advise.