1. Adding Funds to Wallet (Add Funds Transactions)

• When you add funds to your WHMCS Wallet using PayPal, PayPal treats it as a generic money transfer.
• Since it’s not a direct product purchase, PayPal allows you to use your PayPal balance, assuming it is sufficient.
• This transaction is considered lower risk because it’s just funding your account.

2. Paying for a Domain (Domain Registrations)

• When purchasing a domain, WHMCS submits the payment request to PayPal.
• Many domain registrars require payments via credit/debit cards due to anti-fraud measures.
• PayPal may enforce stricter payment methods (like credit cards) for domain registrations because:
  • Domains are high-risk products (they can be used for spam, fraud, etc.).
  • Many domain registrars require PayPal to process payments only with a verified funding source.
  • If your PayPal balance is low, PayPal might automatically default to a linked card.

Possible Solutions

1. Ensure Your PayPal Balance Covers the Full Amount

   • If your PayPal balance is not enough, PayPal will force a card payment.

2. Check PayPal’s Preferred Payment Method

   • Go to PayPal Settings > Payments > Automatic Payments and ensure PayPal Balance is set as the preferred option.

3. Try a Different Registrar or Contact WHMCS Support

   • Some registrars may have different payment rules.
   • If WHMCS forces a card, ask their support if they have PayPal Balance as an option.