Does the 3.6.9.12. purchase directly trigger the 3, 6, 9 or 12 times OR do you simply receive a digital voucher which you can then redeem on e.g. the 4th, 7th, 10th or 13th purchase?
Depending on the answer, you have to make different tactical purchases: in the first case, the bulk purchase would be at the 3.6.9.12. purchase - in the second case at least one purchase later....
Thank you for your help