1. When CLICK ON ANY PRODUCT IN CATALOGUE IT shows 404 page why??
2. https://prnt.sc/xt-SmzGx_dGl why didivder is missing in breadcrumbs and also in products page between category in product name
3. Another comment I noticed – there is a bug about the fact that all snippets of data collected for product prices are without VAT;
Additional questions – can canonical be applied automatically so that there are self canonicals? https://prnt.sc/MY6_HTqQ5vK7
You should deactivate all plugins (except Required Plugins) and then reactivate them one by one. This makes it very easy to isolate the plugin causing problems.