Activate coupon card at the trial month on Netflix?

If I want to try out a trial month at Netflix now and redeem a credit card instead of the account data, will it be activated when I cancel the trial month before the start-up time?

Should not be the case but since you have redeemed the card then why do you want to terminate it would be a waste of money

I wanted to do it so that no costs arise and the Probemonat is consumed and I could do that again and again

Ah no, that's not the value of the card is then on the account on it whether you terminate or not because you have redeemed it

No, once you have entered the code and the runtime has started, this is gone…