Hi,
1. Instead of entering several prices in the product, you should have the base price only, without the discount there.
Then, go in the menu Orders>Discounts, create a discount associated with that product with the discount amount you want and that's it.
The system will calculate the discounted price automatically.
Then, in the HikaShop configuration, make sure that the "Show discounted price" setting is set to display the price before the discount is applied and you'll see both price with the base price being crossed for you.
2. The problem comes from the CSS:
#hikashop_product_bottom_part {
position: absolute;
width: 50%;
top: 27%;
right: 0;
}
in the file /templates/sannesshop/css/default.css of your template.
This CSS moves the description area on top of the right area. And thus, when you try to click on an element of the right area, you're actually clicking on the description area which is overlaying it.
Instead of that dirty CSS trick to move the description on the right side, it would be better to have a view override of show_default with the description area moved at the end of the right side area.
You'll probably have to contact your template provider for that, so that they can properly implement that... as a quick fix while your template provider sort that out, you can remove that CSS from the template and you'll have the description back to its default place and the issues solved.
3. You can create custom fields of the table "product" via the menu Display>Custom fields. These can be filled or selected on the product edition page and then displayed on the product page automatically for you. You can even use img html tags in the values of the custom fields so that you can have color icons if need be.
4. Just create a menu item of the type HikaShop cart via the joomla menu manager in your main menu and when you click on it, you'll be directed to the cart.
5. I suppose that you're talking about a user account area where customers can see their orders history and status.
You can create a menu item of the type "HikaShop user control panel" for that via the Joomla menu manager.
I would believe that most of the text is already translated in german by default.
But if you're missing some translations for your language, you can edit the translation file as explained here:
www.hikashop.com/download/languages.html#translate
Regarding "I tried to do a test login as a test customer but it doesn't work the login after registration." I can't say without more details. What do you mean by "it doesn't work" ? You get an error message ? You get a blank page ? You get redirected back to the form ? Something else ? Please be more precise so that we can help.