Checkout not handing off to PayPal, but not always

-- url of the page with the problem -- : www.nerax.org/tickets-on-sale
-- HikaShop version -- : 2.2.3
-- Joomla version -- : 3.2.3
-- PHP version -- : 5.4.25
-- Browser(s) name and version -- : All
-- Error-message(debug-mod must be tuned on) -- : Error_message

Hello,

I am having what appear to be random but frequent problems with checkout on my shop. Has anyone seen anything like this before?

I am selling event tickets. I have created a no cost shipping option called "Will Call Admission", and I am using PayPal as my only payment option.

The shop is configured to Auto select default shipping and payment methods, and to Auto submit shipping and payment methods selection. Advanced checkout workflow is disabled, and checkout workflow is set to "login_address_terms_cart_confirm,end", with no checkout workflow selected.

Approximately 10% of customers are not being handed off to PayPal to make their payment.

When orders process correctly, the Order Summary email includes the following information:
Customer : Customer email: ********@********.***
Order number : T4K00
Payment method : PayPal
Shipping method : Will Call Admission

When the hand-off to PayPal doesn't happen, the Order Summary email includes the following information:
Customer : Customer email: *********@*****.***
Order number : T4L01
Shipping method : Will Call Admission

(Note the missing Payment Method line)

Where there is no payment method, customers are never offered an opportunity to pay for their order.

I have not been able to isolate the problem to any particular browser or environment. In fact, I have had some customers submit several identical orders from the same computer and browser, with many failing until a final order processes as expected.

Any assistance is greatly appreciated.

Cheers,
Mike

That did the trick.

Cheers,
Mike