Order registration new customers can't register

-- url of the page with the problem -- : www.lebasport.nl
-- HikaShop version -- : 2.6.2
-- Joomla version -- : 3.5.1
-- PHP version -- : php 7
-- Browser(s) name and version -- : all
-- Error-message(debug-mod must be tuned on) -- : no

hi,

Yesterday we updated Joomla to 3.5.1 and today we updated Hikashop Business to 2.6.2 after reading the forum.

Problem: New customers can't register with the login form their orders. So they are calling us.
The registration hold in step 2. and doesn't go forwards to the end. When i force the browser it goes to sending, then when i confirm it goes back to step 2.
I tried by myself and could not make a new order and account.

A known customer which a login account is no problem

Thank you and we find your order perfectly.

But i can't order as a new customer by myself, i have to try it again tonight because its very busy now.

best regards

Marius