Hi Arno, our team is happy to help you get the Call to Action widget in the Venetian WordPress theme recovered on your website!
The default markup used for that widget content is contained in the theme configuration file located in the theme’s directory in your website’s file system if you ever need to find it again in the future. Below is the default markup used in that widget when the theme is first installed on your website.
<div class="col-sm-12 col-md-12">
<a class="button-primary" href="contact-us">CONTACT US</a>
</div><!-- .row -->
You can create a new Call to Action widget by opening up your theme Customizer and navigating to the Widgets section there. Once you have the Widgets panel displayed, choose the widget location where you want to display your Call to Action and add a Visual Editor widget to that area. Switch the Visual Editor widget to Text mode and paste the default markup directly into the widget.
I hope that this helps you get the Call to Action widget working on your website again and please let us know if there is anything else that we can do to help!