1. I cannot click on “Place Order” button, it’s grey out.

The grey out “Place Order” button is due to the information required has not been fill. There is a Scroll down button on the right, you may need to scroll down and fill up the details as shown below

2. I do not have a Paypal account, can I pay with Visa/Master/Amex card?

You are not required to have Paypal account to make the payment. You can pay with Visa/Master/Amex. When landed on Paypal page, click on “Pay with Debit/Credit card” or “Create an Account”, it will redirect you to Paypal Guest Checkout page.