Your in-game name (IGN) is the player username for which you will be
purchasing the items/ranks. In-game names can not contain especial characters besides the
underscore, and are your unique identifier throughout your Minecraft journey. If you are not
familiar with your in-game name, you may find it at the top left corner of your minecraft launcher.
Alternatively, it is also displayed within the middle section, near the 'Play' button in the
Minecraft launcher.