No. The installer/plugin are exactly the same for the Trial and for the paid version.Technically, the only difference is that the paid version provides you with a license Key which allows you to unlock the plugin from being restrained to 1 month.So, you just need to:- click on "License Manager" button : this will say that you are using QuadRemesher in Trial mode. click on "DEACTIVATE" button in order to leave the Trial mode. - click on "License Manager" button again: and enter your email + license key and click on ACTIVATE button in order to use your purchased license.