Hello,
In order to better understand the situation can you check 2 different points :
1. Select a default template like ProtoStar to see if that solve your issue.
2. If, the previous test solve your issue, check the you didn't have any override view
=> From Main HikaShop Configuration, go to Disaply dropdown and select Views.
Use 3 dropdown filters with product / YOUR CURRENT TEMPLATE / front end
=> If you see some little trash icon, and especially on your show_default (or show_reversed, or show_tabular)
This means that you have some override view, and so try to save it on your side, and try to remove it from the website, to see if that solve your issue.
Hope this will help you to progress on your issue.
Regards