It's no problem to change. Even you have chosen Western Union or Bank Transfer, you can still pay via PayPal.
Option 1: You can send money directly to our PayPal account:
Please let us knows your order number in the comments (when you pay via PayPal you can add comments).
Option 2: You can also submit a ticket; our staff will send you a money request into your email. Then you can do according to the instruction of it.
We will start to process your order once we get your payment.