Hi,
- If the second category is unpublished, there is no way that the category would be displayed.
The categories of products are not displayed, there are use in the category listing in order to know which products should be listed.
- You don't have any product price in your screen shot.
A product option is an option, it means that it is an extra product that you can select, it does not affect the price of the product.
Product option are not variants.
- You should set the configuration to display the "add to cart" or you should set a quantity for your products.
It is difficult to tell you without having your whole configuration.
- I have difficulties to understand the problems with the links.
- You should add the HikaShop cart module in your website and add the step "cart" in your checkout workflow.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.