Activate a device
Gotcha normally does this by itself, the moment you paste your key. Use this page only when the device says it cannot reach the activation service — a company proxy usually allows your mail but not a domain it has never seen.
Open this page from a phone or another machine, then carry the code back. It is tied to the device you name below and is worthless anywhere else.
What this sends
The key and the identifier, once. Nothing else — no captures, no address you type here. If you tick the box, the code goes to the address the licence was bought with, which we already have; there is no field for it because you cannot choose it.