On Settings (aka Immersive Control Panel) it says is is activated, in the old Control Panel that it is not. If I click on the activate button in Control Panel, I get redirected to Settings, where says already activated. It is a clear bug from Microsoft.
On Technet forums this is already discussed. I have posted there as well. It is clear a bug in the activation process. We shall wait and see. Perhaps a patch from Microsoft is on its way, alongside the updates next week, alongside new iso files.