Fix Shopify Checkout & Payments

My Shopify store is built and live, but customers can’t finish a purchase. I keep running into payment-gateway glitches and random checkout errors. I’ve already walked through Shopify’s basic troubleshooting guides and retraced my settings, but nothing sticks, so I’d rather not poke around any further and risk breaking more things.

Here’s where I need your help:
• Track down and resolve the underlying payment-gateway problems and checkout process errors.
• Make sure every payment method I offer—Credit/Debit cards (via Shopify Payments), PayPal, Apple Pay / Google Pay, and Ovato—shows up at checkout, authorises correctly, and settles funds without hiccups.
• Test the full purchase flow on both desktop and mobile, including abandoned-cart recovery, confirmation emails, and refund flow so I know everything works end to end.

Once you’re done, I want to see a clean report outlining what was fixed, the settings or code you changed, and proof of at least one successful test transaction per payment method. If anything requires me to contact my provider (for example, additional verification for Apple Pay), note it clearly so I can act on it.

I can add collaborators to the store immediately; just tell me what access you need.