I messed up a custom name box script

[adornquartz]

I need help because I was trying to follow this tutorial: https://community.shopify.com/c/shopify-design/product-pages-get-customization-information-for-produ...

and I kinda messed up but I don't where because there were certain things that I didn't put the specific folders in the tutorial because I didn't have them.

Every time I have a new product now, I have a namebox like in the picture for ALL of the products.

Can someone please help because when I go to Products and then press the Theme Template  drop down list, it shows two options: customizable, and Default product. No matter which one I pick, it still shows the namebox on my website.

Is there a way to fix this and make it ONLY for the products I want?

If not, Is there a way to reverse all of this and start over?