Please deactivate all the plugins not related to the theme and switch the parent theme, check the issue. I suspect that the issue caused by a cache plugin.
I am facing another issue on shop some categories are showing their subcategories but some are directly showing their products instead of showing categories please look into this issue and fix it For example this is a main category https://cartoliinstruments.com/product-category/communications/
it is directly showing products instead of showing sub categories