Markup errors

Hi guys

this plugin seems very easy to use – essential as I’m really not too sure about all this schema stuff ??

I’ve activated the plugin and gone through the basic setup.

I’m getting some errors and warnings in Google’s Structured Data Testing tool. See: https://prettystars.co.uk/wp-content/uploads/2018/08/Screen-Shot-2018-08-09-at-18.09.42.png

All the products in my Woocommerce store throw up the same errors.

If anyone can suggest how to fix this, I’d be grateful!

The page I need help with: [log in to see the link]