Hey Tommaso,
I didn't test this, but my workmate says that limelm.pkey.activity reports the deactivations done trough the server interface but not those done trough the client and the dll.
I'll double check this later today, but the function should return all deactivations.
The other strange thing is that all the activation that I tried today has always been reported with an IP of 0.0.0.0. Is this normal?
This isn't normal. Our server filters out what it sees as bad IP addresses -- we'll look into why you're getting 0.0.0.0.
But the IP addresses aren't used for anything other than display purposes.