I want to chanfge my currencies from VND to USD
Hello, @Trieu
If you have not yet made any payments, you can change your store currency from your admin by going to settings > general and scrolling down until you see the store currency option. Select your currency, and then click save to apply to change.
If you have already had an order on your store, you will not have access to change the currency here - for this, you will have to reach out to our live support in order to change your store currency. Our live support can be reached via our support portal here. You need to select the topics that apply to you, and then choose live support once the option appears to you, you will then be connected to a live support agent who will have access to your account, and can help you out from there. I trust this helps!