I have posted an important update to the Mobile Call Us Widget that I released last year. It now includes the call us images within the package. It is important to update this version, otherwise the image used can suddenly stop working at any time on your website.
Just download from the above link and double click it to install it. It will overwrite any previous versions you have.
If you were using it previously please pay close attention to the update. You will have to select one of the included images to use along with the widget, otherwise the image will not appear.