How can I remove the license?

From 2018, every new plugin released or updated will feature a Remove License File button.
You can access it by clicking on the button, next to the bypass button, in the top-right corner. Choose, Registration from the menu, then click on Remove License File.

For older plugin versions, you’ll have to manually delete the license file, which is located here:
PC \Documents\AudioThing\Licenses
MAC ~\Music\Audio Music Apps\AudioThing\Licenses