I got products whom name is a number serial (i.e 1670).
I use base shop in permalink setting. When I am accessing URL with product name as number, I got error 404.
If I edit the permalink from
to , it works.
I notice A bug when using product number as product name, even I installed it on newly wordpress installation.
I am amaze to see that no one is noticed major bug in woocommerce yet.
Read more here: Permalink error 404 with number as product name