There is no "SKIP" button to skip the activation screen.The SKIP button should be in the bottom right corner of the start screen.
If it is not there, most likely your DAW opens an older version of the plugin which you might have downloaded already a few years ago. Within all VST folders and subfolders there must be only one single copy of the plugin installed, otherwise your DAW could happen to load the older version.
In order to check that properly, just delete all files you can find of the MT Power Drum Kit plugin from ALL your VST folders and subfolders.
Then go into the VST plugin settings of your DAW and re-scan the plugin folders.
Make sure you don't find anything of the plugin anymore in your DAW. So, if you create an instrument track, MTPDK should not be available anymore. If your DAW still finds it, then search for the conflicting copy on your hard drive and delete it as well.
Only when your DAW doesn't find anything anymore of the plugin, continue by downloading and installing the current version from the website.
If you don't do this verification step by double checking and properly deleting before downloading the latest version, you can't be sure whether your DAW might still be loading the wrong copy from somewhere on your hard drive within your VST (sub)folders.