Guest Checkout failing to convert to payment pages

-- url of the page with the problem -- : backyardfarmer.co.uk/
-- Error-message(debug-mod must be tuned on) -- : No error message as such, guest checkout just not working.

The guest checkout is failing to move on to the payment gateway, rather just switching off. Customers unable to pay with guest checkout, so I have had to switch this choice off and rely on customers registering. Registration is very clunky and long winded and we are losing customers, and they too are not receiving the system generated emails due to GDPR now blocking some email providers.

I now have registrations only set up in checkout but this is not satisfactory, the majority of my customers pay by Guest checkout. Please can you advise.

It is not possible to cut and paste and error pages as these simply do not show as an error, but the guest checkout just switches out of the checkout process.

Thankyou

Hi Nicolas

Thank you for your quick response, we had to turn off the guest checkout as it was confusing customers and it is our busy time of year. I will have another look after Christmas though to try and replicate the issue and let you know so you can try for yourself. Unfortunately when the customer enters their details it then just does not convert but goes back to the home page. No error message.
I will try your suggestion too to deactivate the user account validation if I can find where to do it.

Will keep you updated.

Hi

Sorry if I am being a little dim, I can't see anything relating to checkout legacy in the configuration of the checkout. Can you please point me in the right direction.