How to activate and edit the 'Buy Now' button on my store?

I am just starting out setting up my store and I’m very confused about the buy it now button. When I am editing the product page there doesn’t seem to be any way to edit or activate the button. It is just faded out without any way to see what it says. If I check the dynamic checkout option and go to the site it says Buy it with Gpay but I can’t click on the small option underneath for more payment options. If I unclick dynamic checkout, it is just a blank box. How do I make sure that this is set up correctly and gives customers all of the payment options? There must be a simple way to have it say Buy now and Save to cart.

@Jmbre

Could you provide me store URL? I should be able to answer your question.

Yours faithfully!

Sure it’s Zelyr.com

I just have some placeholder images on there now and not much else. Thanks

Also, I just changed one product from dynamic checkout and the other without so that you can fully see what it’s doing.

Zelyr.com