Just downloaded NoiseNinja, have Q'S?

I downloaded and installed it but now i need the license. Where do i get it from? Also, when you open a pic that has noise in it and goto the noiseninja under filters. Does it automatically scan the pic to remove the noise? Maybe its just noobness and not understanding the program yet, but any tips would be appreciated.

and yes i searched.

You buy a licence from the same site (I presume) where you downloaded the software - picturecode.com. The site explains the differences between the various licenses and lists pricing.

Click the [Help] on the upper menu bar, then click "User Guide..."
All the info is in there.

If all you're doing is trialing the software, you don't need to the license. You can just bypass that window that asks for the license key.

well im not just trialing, but i want to be able to save the pics and not have the grey grid across them. I emailed the site about the license, they said i need to purchase the home bundle.