Is It Safe to Use UPI Payment Apps for Money Transactions? - Paytm

Until recently, most adult-friendly platforms relied solely on credit cards, international gateways (Stripe/PayPal), or crypto. This created a massive barrier for Indian users because:

: Some users report trouble receiving refunds after canceling their memberships. If a refund is not processed, experts recommend contacting the payment processor listed on your bank statement directly.

┌───────────────────────┐ │ Front‑End (Web/Mob) │ └─────┬───────┬───────────┘ │ │ ▼ ▼ ┌───────────────┐ ┌─────────────────┐ │ UPI Intent │ │ QR/Deep‑Link │ │ Service API │ │ Generator │ └───────┬───────┘ └───────┬─────────┘ │ │ ▼ ▼ ┌───────────────────────────────────────┐ │ UPI Orchestrator │ │ (stateless micro‑service, gRPC/REST) │ └───────┬─────────────────────┬─────────┘ │ │ ┌─────▼─────┐ ┌────▼─────┐ │ PSP SDK │ │ Callback│ │ (NPCI API)│ │ Receiver │ └─────┬─────┘ └─────┬─────┘ │ │ ┌─────▼─────┐ ┌─────▼─────┐ │ Bank‑API │ │ Event Bus│ │ Adapter │ │ (Kafka) │ └─────┬─────┘ └─────┬─────┘ │ │ ┌─────▼─────┐ ┌─────▼─────┐ │ Ledger │ │ Notification│ │ Service │ │ Service │ └───────────┘ └───────────────┘