Hi, I’m getting the same problem.
As you mentioned above, I’ve deactivated any plugins that interfere with WooCommerce. But it still hangs on the same screen and doesn’t direct to WorldPay.
Site is: https://www.gogobicycles.co.uk/
Paypal is active but it is not a plugin and I’m running WooCommerce Version 2.6.14 if it helps.
Thanks,
Sam