We may suggest that you first change media, for example if you were on a mobile phone, to switch to a computer or vice versa.
You can also change browsers or switch to private browsing mode.
If you have entered a new delivery address when placing your order and are logged in to your customer account, the payment stage may be blocked. You must first enter and save this new delivery address in your customer account before placing your order.
If the problem persists, don't hesitate to send us screenshots and error messages via our contact form.