This library does require a license to become fully operational after the 30 day trial period.

During the trial period, your plot signal lengths will be limited to 300 data points.

All minor version upgrades and build revisions are covered with this license.

After you [Purchase] a license you should receive a license via email withing 24 hours with your license key.  There is no need to download or reinstall anything.

In the body of the licensing email will be the License Key.  

Copy the License Key text and press [Paste] and then [Accept].