Already owned a hack - still full payment?

[hopacopa]

Hey guys,

i was already using a hack (DayZ and WarZ), when i want to buy another copy of it, it tells me i have to pay the full money instead of the 15$ (20 $ for first month).

Or i just have to pay 15$ when i used it a month ago?

so, last month 20 $ this month 15 $ and not November 20 $ this month 15 $?

[verbatim]

The discount works only if you purchase a recurring subscription.