Hi!
Here's the screenshots of the checkout workflow and payment methods.
And here's the issue:
The URL of the checkout when you first get to the checkout page is:
www.example.com/shop/checkout/checkout.html
As shown by arrow 1 the currency is set to USD for this order (the "Main currency" is stil set to EUR).
And when the button (shown with Arrow 2), is clicked the page is refreshed looking exactly like the picture above, the only thing that has changed is the URL which is now
www.example.com/shop/checkout/checkout/task-show/cid-1.html
But nothing further changes and one can't complete the order still.
This issue is still there if we change the "Main currency" to USD and try to order in EURO.