I just tried but I'm not redirected to paypal on your website.
It sounds like you didn't configure your shipping methods properly since they are not displaying on your checkout.
If you don't need any shipping method selection, just remove the "shipping" view from the checkout workflow of the configuration and it will allow you to finish the order.
If you do need it, you have one of the problems of that FAQ and you should check each points:
www.hikashop.com/en/support/documentatio...ins-listing.html#faq