If your payment didn't go through, unsuccessful payment attempts are typically not charged, though this may depend on the payment method or bank.
Payment links are session-based and expire after a period of inactivity. If your link has expired, you'll need to restart the payment process from your registration page.
Common reasons for payment failure include insufficient funds, card issuer decline, expired payment session, or bank security blocks on the transaction (especially for higher amounts or international payments).
If the problem persists, try a different payment method (e.g., switch from credit card to iDEAL) or contact your bank to authorise the transaction. Retrying with a different payment method or contacting the bank usually resolves the issue.