GD servers aren't pay2win, so your donations will help to pay for the servers, but won't give you any ingame rewards. If you join GD's Patreon (with 10$ tier or higher), your base won't be demolished due to inactivity as long as you keep your subscription, and you will receive dino recolor and gender change tokens. You can earn Ghost Coins only by voting on the server or trading with other players.