Hi,
Thank you.
I see that you have the "force canonical URLs on listings" setting disabled. So in that case the problem is likely not in HikaShop.
Edit the settings of the left module, make sure that a HikaShop categories listing menu item is selected in the "menu" setting there and save the settings.
If that doesn't help, I can only think of a caching issue, either on the website itself (so check the cache settings of the Joomla configuration, try to clear the cache of the website, etc), or with a SEF extension. If you have sh404SEF or JoomSef or another sef extension installed on your website, you'll want to purge/clear the cache of the URLs in it and it should help. If they are installed, you should find them under the "components" menu in your backend.