Braintree Checkout Errors

I have the latest WP and PMPro, which comes with Braintree built-in. However, I’m trying to do standard credit card payments using Braintree, and it keeps throwing an error saying it is not able to create a Customer in Braintree. I’ve done some digging and I think the PMPro Braintree code is out-dated, as it is trying to use deprecated options for the Braintree API.

See here: https://developers.braintreepayments.com/reference/request/customer/create/php#credit_card.cvv

This matches up with the error I keep getting from Braintree:
Failed to create customer. CVV must be 4 digits for American Express and 3 digits for other card types. Expiration date is invalid. Credit card number must be 12-19 digits.

This lines up with the code in /paid-memberships-pro/classes/gateways/class.pmprogateway_braintree.php starting on line 596:

try
{
    $result = Braintree_Customer::create(array(
        'firstName' => $order->FirstName,
        'lastName' => $order->LastName,
        'email' => $order->Email,
        'phone' => $order->billing->phone,
        'creditCard' => array(
            'number' => $order->braintree->number,
            'expirationDate' => $order->braintree->expiration_date,
            'cvv' => $order->braintree->cvv,
            'cardholderName' =>  trim($order->FirstName . " " . $order->LastName),
            'billingAddress' => array(
                'firstName' => $order->FirstName,
                'lastName' => $order->LastName,
                'streetAddress' => $order->Address1,
                'extendedAddress' => $order->Address2,
                'locality' => $order->billing->city,
                'region' => $order->billing->state,
                'postalCode' => $order->billing->zip,
                'countryCodeAlpha2' => $order->billing->country
            )
        )
    ));

    if($result->success)
    {
        $this->customer = $result->customer;
    }
    else
    {
        $order->error = __("Failed to create customer.", "pmpro") . " " . $result->message;
        $order->shorterror = $order->error;
        return false;
    }
}

This is the main payment gateway I need for a site I’m trying to launch ASAP, so I will try and hack the plugin to fix it for the time being.

https://www.ads-software.com/plugins/paid-memberships-pro/