Hide Add to cart after FULL customisation

I have just updated the plugin to the latest version and now the add to cart function has changed.

Our customers had to fully customise their product before the add to cart button appeared previously. Now with any minor change they can add to cart.

Our products require a minimum of 2 items (logo and text) to be customised before their item can be added to the cart.

I have already ticked the "customisation required" field in admin to "All views need to be customised" but this has had no effect.

Can you offer any advise please?