The styling is not loading properly so that is why the button is not displaying properly.

Here is the solution:

1) Click into “design” and into “edit html/css”

2) Click into “no-header” page layout

3) Here locate this code:

</head>

<style>

#wsite-com-checkout-cart-footer {

padding: 5px;

}

 

.wsite-button.wsite-button-large.wsite-button-highlight.wsite-checkout-button.wsite-com-paypal-checkout-button {

padding: 0;

height: auto;

}

 

.wsite-button.wsite-button-large.wsite-button-highlight.wsite-checkout-button.wsite-com-paypal-checkout-button .wsite-button-inner {

padding: 0 20px;

}

</style>

</head>