Hi,
@3by400 :
The legacy option was added in the 3.0.0.
You can find it under the "advanced" tab of the HikaShop configuration and its name is "checkout legacy".
If you don't see it, then either you don't have a 3.x version, or you have some view overrides of the configuration page preventing you from seeing the new options.
There are no version of HikaShop 3 without the legacy setting. Also, with the legacy setting activated, the checkout should behave the same as with the HikaShop 2 checkout.
@Joeri :
Hard to say. It probably means that something is missing.
For example, the VAT number is invalid, or there are no shipping methods, etc.
Sometimes, error messages are not displayed by the template with the old checkout :
www.hikashop.com/support/documentation/6...tibility-issues.html
So it could be why you don't see the error message which would help you understand what's going on.
If you turn off the "checkout legacy" setting, does it work fine ?