I have an e-commerce website built on firewave.co.za which has the core files. I then have a parked domain firewave.surf pointing to firewave.co.za to share its content

When you go to firewave.surf, it then shows firewave.co.za content without changing the firewave.surf url. Everything works as it should except for:

• Adding products to cart seems to work in the cart menu and navigate to the cart from there but if you go to a product, add to cart and click View Basket, it suddenly redirects to the .co.za domain and shows an empty cart

Is there a way to change it so it works correctly and goes to the same cart page as in the cart menu?

Researching similar issues with parked domains didnt yield any results