Information about Netflix voucher?

I have a question. This Netflix voucher with 25 euro value, how can you use Netflix?

I also bought one with 25 euro for my BFF, but since she took premium, I think you already pay 15 euro, it was only enough for one month. But then you can recharge

I see. Do you think it depends on which 3 options you choose or and sorry I wrongly chose your answer as not helpful I'm sorry

Yes, it depends because you pay more for some things.

There are vouchers where you can choose the exact amount. With 25 euro you always have a balance.