I just wanted to ask, what happens if I redeem a 60-day game time card when I still have an active subscription from my previous pre-paid? Does it add another 60 days to the ones I still have left, or does it "overwrite" my previous sub and just starts a completely new one?

Normally I would just wait for my game time to expire and then use a new key, but now, with the monthly stipend going on, I don't want to miss anything. Do I automatically get 400CP when I start a subscription, or do I have to wait an entire month for these points to appear?

as far as i know it should just add the time to the current subscription.