WooCommerce order confirmation page not being displayed after payment

Hello 

I have setup WooCommerce and I am trying to use SumUp as the payment method.?

When configuring the OAuth app details – in the SumUp configuration screen it as asking for “Authorized redirect URL” so the user is successfully sent back to the WooCommerce checkout screen and shown their order.?

I assume this needs to be the order-received endpoint – so I set it to “https://www.hatherleighcarnival.co.uk/checkout/order-received/”
When I put a test order through, the payment is taken, and the order confirmation email is sent, but it returns the browser to basket screen and shows an empty basket after payment is made.?

I presume its because I’ve got the Authorized redirect URL set incorrectly?

Can you let me know what I need to set the “Authorized redirect URL” to be for this to work properly so the user is shown their order confirmation after payment. 

Thanks in advance.