explain please how this pay2pay works here

[Biddas]

12 hours free ?and every 12 next hours should i pay 15 $ or wait for a next month to play 12 hours again ?
first time i see this different pay2pay way ...

[Temessis]

It counts in-game time, so you can play for 48 hours for free, and then 12 hours in-game logged in per month or if you want you can buy for example for 15$ 720 hours of gameplay, which is 1 month, and then buy next 720, next 720, next 720 and still and still

[Denkar]

You have to send jorb and loftar $15 in unmarked one dollar bills every twelve hours or your character dies