The trial version of LogoManager is distributed freely for the purposes of evaluation. Few features are disabled, and the only major limitation is the fact that any graphics you generate with LogoManager will have the word 'demo' overlaid on the image. Note that if the upload/download buttons are disabled, it is not because you are unregistered, but because LogoManager was unable to communicate with the handset.
When you register, you will be sent an unlock key along with a username and password - when the details are entered, the word 'demo' will be removed, and all features will be enabled.