https://github.com/mollie/PrestaShop/blame/36b0c33cf2248df0c539d5652e9e492806518651/src/DTO/PaymentData.php#L463-L465
In PaymentData.php, the shippingAddress.givenName and shippingAddress.familyName fields incorrectly reference getBillingAddress() instead of getShippingAddress():
'shippingAddress' => [
'givenName' => $this->cleanUpInput($this->getBillingAddress()->firstname),
'familyName' => $this->cleanUpInput($this->getBillingAddress()->lastname),
https://github.com/mollie/PrestaShop/blame/36b0c33cf2248df0c539d5652e9e492806518651/src/DTO/PaymentData.php#L463-L465
In PaymentData.php, the shippingAddress.givenName and shippingAddress.familyName fields incorrectly reference getBillingAddress() instead of getShippingAddress():
'shippingAddress' => [
'givenName' => $this->cleanUpInput($this->getBillingAddress()->firstname),
'familyName' => $this->cleanUpInput($this->getBillingAddress()->lastname),