A third level punishment can be enforced when you are completely screwed, almost an enemy of the server, fucked up and broke the rules UP TO four times, example:

You stole 5 stacks of apples from the shop and didn't confess and wanted to go to trial and falsely accused an AT member, that's 1x theft + 2x lying, so you have a court sentence and a punishment according to the rules, or a ban, after the time you were banned you then also griefed spawn, so on top of that: grief.  That's a PERMA IP BAN, which you can get rid of with this purchase