Merx plugin. Complete order using Paypal not working

The CMS Questions
1

I am trying to use the Merx plugin for e-commerce, which I’ve managed to get it working apart from the final completion of payment through PayPal. In my checkout.php controller, I have the following.

<?PHP
 if (merx()->cart()->isEmpty()) {
  go('/');
 }
 if (kirby()->request()->method() === 'POST') {
  try {
  $data = $_POST;
  $redirect = merx()->initializePayment($data);
  go($redirect);
 } catch (Exception $ex) {
  echo $ex->getMessage();
  dump($ex->getDetails());
 }
}

and my config is:

<?php

use Kirby\Exception\Exception;

return [
  'debug' => true,
  'ww.merx.production' => false,
  'ww.merx.currency' => 'GBP',
  'ww.merx.currencySymbol' => '£',
  'ww.merx.gateways' => [
    'paypal' => [
      'ww.merx.paypal.sandbox.clientID' => '',
      'ww.merx.paypal.sandbox.secret' => ''
    ],
    'credit-card' => [
      'ww.merx.stripe.live.publishable_key' => 'pk_test_',
      'ww.merx.stripe.live.publishable_key' => 'sk_test_'
    ]
  ],
  'routes' => [
    [
      'pattern' => 'add',
      'method' => 'post|get',
      'action'  => function () {
        $id = get('id');
        $quantity = get('quantity');
        try {
          cart()->add([
            'id' => $id,
            'quantity' => $quantity,
          ]);
          go('/');
        } catch (Exception $ex) {
          return $ex->getMessage();
        }
      },
    ],
    [
      'pattern' => 'remove',
      'method' => 'post|get',
      'action'  => function () {
        $id = get('id');
        try {
          cart()->remove($id);
          go('/checkout');
        } catch (Exception $ex) {
          return $ex->getMessage();
        }
      },
    ],
  ],
  'hooks' => [
    'ww.merx.cart' => function ($cart) {
      if ($cart->count() > 0) {
        $cart->remove('shipping');
        if ($cart->getSum() < 2) {
          $cart->add([
            'id' => 'shipping',
          ]);
        }
      }
    }
  ],
];

I expected the go($redirect); to send to PayPal but instead, it loads the order.php of the order. Is there something / a setup step I’m missing?

Does anyone have experience with this plugin? Thanks for reading.

2

This question has already been posted. Please don’t post the same stuff twice. Closing this.

You might want to post your additional information in your original thread.