Anyone who followed the photo essay about the fire on Sealand a few years ago would recognize that Sealand is little more than a fantasy/hobby of a couple of nut jobs trying to scam some income out of a rusty hulk. No reliable power source, no easy transport, not potable water, no permanent residents. It is a investor funded camping expedition with the occasional porn video streamed over a slow-ass satellite connection. It is not, nor was it ever, a viable "offshore hosting facility".
And after they burned up the generators and half of the platform, it's really not even habitable now. So no surprise that the royalty has likely departed to points closer to the mailboxes holding their dole checks.