New icons in backend don't work

Hi,

I'm not sure because I can't reproduce these on my end. First, download the install package of HikaShop on our website and install it on yours. Clear your browser's cache and try again. It might be that you're missing some of the latest patches we added in the first week after the release.
If that still doesn't help please provide a backend access via our contact form and we can look into it.

Hi,

So, I checked your website backend and the issue comes from your CSS. Under the Display tab of the HikaShop configuration page, you had created a custom CSS for the "Backend CSS file" setting and were using it.
This custom CSS is based on HikaShop 4.5.0, which means that you don't have in it all the CSS code we've added to the HikaShop backend since that version of HikaShop. And with the latest versions of HikaShop being quite heavy on improvements and new features, you are missing a whole bunch of things in it.
I've switched to "default" in that setting in order to use the default version of the HikaShop backend.
Note that since Joomla 4, it is recommended to add custom CSS code in your backend via the Atum template's custom CSS file mechanism:
github.com/hotmango/Atum-Custom-UserCss
This way, you still don't lose your changes when you update HikaShop or Joomla, but on top of that, you get all the new CSS we add in the future without having to maintain your custom CSS based on an old version of it.