Mimic Safari browser on WKWebview

I would like to Mimic safari on my current existing browser app. Everytime I open Yeezysupply, add something to cart, I can see checkout page (see pic).But when I open my browser, load the same page, I would like to Mimic safari on my current existing browser app. Everytime I open Yeezysupply, add something to cart, I can see checkout page (see pic).But when I open my browser, load the same page, it wont load the checkout page. This may be because the site is identifying that I am using an app, so we must get around it..by...