Cannot complete payment in 1.8.1

Hi,

WP: 5.1.1
Woo: 3.6.3

DIBS Easy for WooCommerce in version 1.7.5 works fine.
DIBS Easy for WooCommerce in version 1.8.1 fails to complete payment with the following error from DIBS.

Request URL: https://checkout.dibspayment.eu/api/v1/pay
Request Method: POST
Status Code: 449
Remote Address: 45.60.177.144:443
Referrer Policy: strict-origin-when-cross-origin

I have been testing on a live site changing only the DIBS Easy for WooCommerce plugin version, keeping everything else the same. The error happens when you click the payment button after you’ve entered all information. It fails without creating the payment with DIBS.

Payload in 1.8.1 which fails:
{
acceptedTermsAndConditions: true
amountConfirmedByConsumer: 100
consumerCheckedSaveNewPaymentMethod: false
consumerHasConsentedToRememberingNewDevice: false
consumerWantsToBeAnonymous: true
paymentType: {
card: {
cardNumber: “****************”
cardVerificationCode: “***”
expiryMonth: “**”
expiryYear: “**”
}
}
type: “card”
}