To use the rechargeable card, you need to purchase a subscription. Without it, the card is blocked – you can't top it up, make purchases, and so on. The monthly subscription costs 6 USDT. If you pay for a year upfront, you get a 50% discount (in this case, you need to pay 36 USDT at once). The advantage is that the subscription covers all cards at once. This is convenient, as some cards do not allow payments for certain services, and it's better to have several cards.
