Hi,
I duplicated my theme storefront and storefront-child
I created storefrontv2 and storefrontv2-child
The new folders and their contents appear properly in the theme folder
I restarted Apache and Mysql
When I look in Appearance/themes to activate the duplicate theme there isn’t any visibility of in so I can’t activate it.
I’m running WordPress 4.9.8 and version 1.0 of your plugin. My WordPress site is a multisite installation. My aim is to be able to run different versions of Storefront on different sites having created a different single product templates.
What am I missing?

Thanks in anticipation
Russell