PayPal express not working

[pbalcerzak]

Describe the bug
When trying to complete the order with paypal express we are stuck on "Your order can't be shipped to this country" error in paypal window (country configuration is correct).

Versions
Shopware version: 6.6.8.2
Plugin version: 4.2.6

To Reproduce
Steps to reproduce the behavior:

1. Setup clean shopware
2. Install and configure Adyen plugin
3. Add product to cart
4. Visit cart and click on PayPal express button
5. Login to your PayPal account
6. Error is shown and it's impossible to proceed

Expected behavior
PayPal express should work

Screenshots

Additional context
As far as we were able to debug, when your plugin calls /adyen/proxy-express-checkout-update-paypal-order which in turn calls https://checkout-test.adyen.com/v71/paypal/updateOrder the information sent in the payload is correct compared to your docs but in the response we get

message: "Internal error"
code: 500
status: 500
errorType: "internal"
adyenErrorCode: "903"

[pbalcerzak]

After contacting Adyen support the issue has been fixed