Can't verify app block
One of the reasons for this issue is that the app block for the widget has not yet been added to your default Product template.
I am using Dawn, a 2.0 theme, but seeing the error message "Sorry, TrustZ does not support Vintage theme yet"
We are sorry for this inconvenience.
Can't verify app block
If you are using more than one product template, ensure that you add the widget to the template assigned to the product you want to display. Otherwise, the widget won't be visible