Why was my virtual card declined?

Check these first

1. Balance. The card only spends what's loaded on it. Hotels, car rentals and some subscriptions place a hold for more than the price, so load a little extra.
2. Paused. A paused card declines everything until you resume it.
3. The merchant. A few merchants refuse prepaid cards outright, whatever the balance.

Each decline costs $0.65 from your card wallet, so fix the cause before trying again rather than retrying the same payment several times.

If none of that explains it, email support@quackr.io with the card's last four digits and the merchant's name.