Hi WashingtonGlawson, If you're encountering errors when trying to add a card for payment despite trying multiple cards, here are a few steps you can take: 1. **Verify Card Details**: Ensure all card details, including the number, expiration date, CVV, and billing address, are entered correctly and match the information on file with your card issuer. 2. **Check for Restrictions**: Confirm with your bank that there are no holds or restrictions on your card for online or international transactions. 3. **Try Another Browser**: Switch to a different browser or clear your current browser's cache and cookies, as this can sometimes resolve persistent form submission issues. 4. **Payment Method Error**: There might be an ongoing issue with processing payments. If the problem continues, consider reaching out to your bank for more insights or trying a different payment method if available. If none of these steps resolve the issue, it may be beneficial to check if there are any broader issues with Vapi's payment system by visiting their [support page](https://docs.vapi.ai/support) for updates or contacting them through support channels.