Be warned. Do not buy credits as they will make it the subscription withdrawal amount from your bank account and it is impossible to cancel or change they subscription, they have full control of your credit card, not you
Do not deal with this organisation, it is tricky. You think you are purchasing credits but what ever you pay will become a subscription for them and they will take take take money and there is no way to stop or cancel the subscription they set up with your credit card. Be warned