Work down this list. Each step removes a different part of the chain, so by the end you will know where the problem sits.
- Approve it in your banking app. Look for a pending approval or a blocked payment. This is the single most common fix.
- Retry once. Transient failures are real, but do not retry repeatedly: each attempt can leave a hold on your balance.
- Turn off your VPN for the payment.
- Try a different browser, or the SimFuse app. This rules out pop-up blockers and cookie settings breaking the verification step.
- Try a different card, ideally from a different bank.
- Pay from your SimFuse wallet. No bank is involved, so nothing can be declined.
- Pay with crypto. Also avoids the card network completely.
Still stuck
Contact us with the time of your last attempt, the last four digits of the card, and any error text you saw. We can see the processor's response for that attempt, which usually identifies the cause immediately.
If you are travelling tomorrow
Say so when you contact us. It changes what we suggest, and we would rather get you connected than debug a card.