Do you offer trial licenses?

Per the End User License Agreement, you can use the Pro and Premium components without a commercial license for 30 days for non-production environments. You can also use it for the development of code not intended for production (for example the reproduction of an issue, doing a benchmark).

You don't need to contact us to use these components for the above cases. 

You will need to purchase a commercial license in order to remove the watermarks and console warnings.