Crashmaster, contact Ivan or X0, they will be able to help you with the paid situation. You don't activate it, they do.
Also, this game has been going behind the scenes for months, they just now decided to let you know that they're working on it. This happened about last week. So it's been going through the changes, upgrades and server switches for a bit now. It's finding it's footing under new devs. Which is fine, the game is still playable.
Server things happen. That's true. Annoying, but true. But once those are ironed out, things will run more smoothly.
Discord: CritterPup