Fix & Integrate Website Payments

My PLR-product website based on wordpress is live, but the payment flow is broken. I need two things done quickly:

1. Repair the existing “Buy Now” link so it actually processes a sale.
2. Add Paytm as the new gateway for a smooth, one-time payment checkout.

Once the transaction clears, the buyer must be taken straight to their digital download page while I receive instant confirmation of the sale. After the integration is solid, I also want to spin up a Facebook ad that sends traffic directly to this product page, so the entire funnel—ad click → site → paid download—runs without a hitch.

Key points you’ll handle
• Both fixing the current link and adding Paytm support (one-time payments only).
• End-to-end testing: sandbox, live mode, and a real purchase to confirm delivery and email receipt.
• Any lightweight tweaks in code or settings required so the ad pixel tracks the completed payment event.

Deliverables
– Repaired payment button linked to the working gateway.
– Fully configured Paytm integration with callback/redirect to the download page.
– Documented steps or credentials I may need to maintain the setup.
– A short walk-through video or screen share proving the funnel from Facebook ad click to completed purchase.

Acceptance Criteria
• Transaction shows as successful inside Paytm.
• Customer immediately accesses the digital product without manual intervention.
• I receive the payment and a buyer confirmation email.
• Facebook pixel (if you install it) fires a “Purchase” event.

If you’re comfortable with Paytm APIs and conversion-focused Facebook ads, let’s get this wrapped up.

Experienced Indian who can fix wordpress, and also who knows to create Facebook ads and experience in digital marketing preferred.