When a card that worked reliably before starts failing consistently — with no change on your side — it's almost always the payment processor having an issue on their end, not your bank or your account. This tends to arrive in waves: multiple unrelated users report the exact same pattern in the same time window.
The most effective step is filing through OpenRouter's official support form (support@openrouter.ai) rather than Discord or Reddit, since community posts often don't reach anyone who can act on them. Mention that the card worked previously and nothing changed on your end — that detail helps distinguish it from a normal decline.
If you need credits while that's being sorted, a crypto top-up avoids the card path completely. ROZO Checkout works with BTC Lightning, USDC, USDT and more against an OpenRouter payment link for a 1% fee. ROZO is independent and not affiliated with OpenRouter or Coinbase.