No Shopify Payments where you sell? How do you take cards today?

We launch CheckoutSwitch here on Saturday 31 October. Before then, a question for anyone selling on Shopify from a country where Shopify Payments isn't offered (it's offered in 40 countries):

How do you take card payments today, and what's the hardest part of it?

What we built: your Shopify store gets a branded checkout of its own, shoppers pay inside Whop's payment box straight into your own Whop account, and every payment becomes a paid Shopify order, checked every 15 minutes. You can try it as a shopper in the demo store (Whop test mode, test card), on the Classic page that looks like Shopify's own checkout: https://demo.checkoutswitch.com/...
More checkout pages to explore on our website: https://www.checkoutswitch.com

Honest answers help us most, including "I wouldn't switch because...".