Issue with Woocommerce Color or Image Variation Swatches plugin

The plugin “Woocommerce Color or Image Variation Swatches” is not working as it should be. Because it should show the tab “Coloured Variables” when Variable Product is selected in product page, but we are not getting that option, can anybody help me regarding this?

what happened with the product?
is was deleted???

It has been resolved. Thank you.

how it was resolved?

the author is gone, is your plugin the phppoet plugin?

We decided not to use the plugin since it was not supported by the author. We are using Visual Attributes - WooCommerce Variable Products and it works well