The license is successfully loaded, but the License component still says that it is a Trial Version.
Make sure to start Rhino as administrator when loading a license.
Make sure to unblock the License file before loading it into Grasshopper. To do this, right click on the file in Explorer and go to Properties. If the file is blocked, there will be an option to ‘Unblock’ the file at the bottom of the Properties Window.
Check the directory where Karamba is installed. It should be located in the Plugins folder of the Rhino installation. This is often C:\Program Files\Rhinoceros 5.0 (64-bit)\Plug-ins, however it can also be C:\Program Files\Rhinoceros 5 (64-bit)\Plug-ins. Make sure the folders correlate.
If all fails, reinstall Karamba and load the license once again