Hej Rossoneris
I have the same problem as you. I'm from Denmark to.
The only option is Ukash, and the nearest Ukash-shop is 100 km from my residence, I have to take a ferry and a car, too expensive. It is risky to buy a Ukash voucher online.
I think it is too troublesome and too costly to make a payment via Ukash to Cardsharingserver. I have spent a lot of time on Ukash.
When my subscription terminates on Carsharingserver, I have to find another solution, maybe Netflix.
I have otherwise been very satisfied with Cardsharingserver, but payment is a big trouble.