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Users in Argentina and Brazil are experiencing issues with Mercado Pago QR code payments using Sberbank. Payments are being processed but immediately refunded. Sberbank support claims no issues on their end. It is advisable to seek alternative payment methods.

Paying via Sberbank QR in Argentina through Mercado Pago is unreliable. Users report consistent failures regardless of app version or device (Android/iOS). When cross-border QR payments do function, they often incur significant exchange rate losses (approx 8-10%). Cash exchange at local exchange houses ('cuevas') typically offers a more favorable rate compared to automated banking channels.

Travelers often encounter issues paying for bus tickets on platforms like Andesmar, Busbud, and Platforma10 using foreign credit/debit cards (e.g., non-local Visa). Common error messages include 'invalid data' or 'payment failed'. Solutions include: 1) Linking the foreign card to a mobile payment system such as Apple Pay or Google Pay and completing the purchase through them. 2) Using country-specific versions of the platforms (e.g., 'andesmarchile' for routes in Chile) and selecting local payment options like 'debito y credito (webpay)' which may process foreign cards more reliably.

Describe the ongoing economic crisis in Argentina, characterized by frequent business closures (including small businesses), a stalled construction sector due to lack of credit, and strict controls on cash transactions. Emphasize the structural nature of these problems.