Checkout proccess broken after saving checkout after 3.0 update

-- HikaShop version -- : 3.0.0
-- Joomla version -- : 3.6.5
-- PHP version -- : 7

Hi guys,

It looks like after saving the checkout that there is some reversing in the system.

Here a video how it works on Hikashop 2.6.4
www.dropbox.com/s/5d9tspzm98mqw0t/Hikash...%20checkout.mov?dl=0

Than i update and test it without saving or changing anything
www.dropbox.com/s/a99u5odjhgbfbe3/kleur-...er%20update.mov?dl=0
This goes better i think

I go to the checkout process and without changing any setting i apply the settings.
It looks like it is going back to half the old and half the new stuff.
www.dropbox.com/s/8zx6mh0bwvwxslw/kleur-...ut%20update.mov?dl=0

Can you help me to fix these issues?

Oh and again i fixed the issue haha

It was a legacy setting that was set after applying the settings.
So some layout is broken but it is working now.

You can delete post or leave it for other noobs