: Discover often blocks transactions to crypto exchanges for security or policy reasons. If your transaction fails, you may need to call Discover's fraud department to authorize it.
: A non-custodial exchange that supports credit card purchases, often through third-party partners like Simplex that may accept Discover depending on your region. Step-by-Step Guide (Using BitPay) buy bitcoin with discover card
If your Discover card is repeatedly declined, consider these more widely accepted methods: : Discover often blocks transactions to crypto exchanges