Hello,
I will try to explain this as simply as I can.
I have 4 product categories – say a, b, c and d.
Products are being displayed throughout the website.
The products that fall under category “b”, “c” and “d” are displaying category as “a”.
I hope you understand the issue now. Just in case, check out the screenshot and look at the product categories – you should notice that they are all the same: https://prnt.sc/1hipduc
And to clarify, the product category from the product panel have been checked. Product categories have been correctly marked as per the category.
Regards.