If I buy a voucher that z. B. Costs 25 euro. Then I have to pay 12.99 euro per month. Will the dws subscription be automatically terminated if there's no longer enough money and when will it be continued again?
No, of course it won't.
A subscription without a time limit always runs until you cancel it.
But you can close it and cancel it immediately.
Basically, however, I recommend storing a permanent source of payment for a subscription service. So rather credit card or PayPal. So you don't get any problems due to a possible payment arrears.
I don't even know if it's a subscription
It's a subscription
But don't you write that yourself?
"The dws subscription is then automatically terminated when the money is no longer sufficient"
Yes, I was stupid, I don't know if it's a subscription
No problem, now you know.
