Method 1 - To extend the same time period as the order before:
You can contact our Customer Support Team to create an extension order for you. After you complete the payment, your previous order will be extended and your IP assigned will not be changed.
Method 2 - To extend the shorter/longer time period than the order before:
You can contact our Customer Support Team to help you find a suitable solution. Our team can help you edit the setting of your order. All you need to do is to complete the payment.