Add To Cart button instead of Buy Now

I run Multisite and Marketpress.

At my subdomains (i.e. my shop buttons show as “Add To Cart”, which, when clicked, adds the item directly into the cart.

Over at my flagship shop ( my buttons show as “Buy Now”. When they’re clicked you’re brought to the product page instead.

Someone opened a thread about this here: but a solution wasn’t given.

Under Store Settings of my flagship store >> Presentation tab both “Single Product Settings” and “Product List Settings” have “Checkout Button Type” as “Add To Cart” button. Yet somehow it’s not working.