To prevent abuse of the return policy, you now need 2 hours of playtime before the normal drop rate starts. Most games have a drop rate of ~30 minutes so the first card will typically arrive around 2.5 hours of playtime. You have 2.1 hours of playtime in Arma3 so you stopped idling it a bit before you would receive some cards.

ok so i just need to activate again tomorrow and it should drop some cards then?

Yes, idling some more will result in you receiving some cards.