Fix Nykaa eGift Card Decline -- 2

Each time I attempt to buy a Nykaa e-gift card on their website, the transaction reaches the Processing Payment stage and is immediately marked “Card declined.” The card itself works elsewhere, so the issue appears to sit squarely in the site’s payment flow rather than with the bank.

I need someone who can quickly trace and eliminate whatever is blocking the payment at that final processing step—whether it’s a gateway configuration, an integration glitch, or a hidden front-end validation problem. You should be comfortable inspecting website payment logs, testing sandbox transactions, and rolling out a clean fix without disrupting other checkout options.

Deliverable
• A fully functioning e-gift card checkout on the Nykaa website with no “Card declined” error at the processing stage, verified by a successful live transaction.