This has happened since we verified our woocommerce shipping V2... well since we have realized. Lots of 404's from Google on product pages. Can Woocommerce help? Our web so-called guy is too busy for us so we have to do it ourselves. The google update has put him back he said!
We are not the best with this but simple instruction we can follow we should be fine. Cheers Gareth
Ps and we are looking for a new webguy! SEO GUY ;)