[Plugin: WordPress Simple Ecommerce Shopping Cart Plugin- Sell products through Paypal] Checkout Not

Everytime I try and checkout with Paypal Standard Checkout.. It just brings me to the checkout page with no input fields to input paypal information for purchasing (credit card, name, billing address, etc.) Please help!

https://www.nuformaltennis.com

https://www.ads-software.com/extend/plugins/simple-e-commerce-shopping-cart/