There are various reasons due to which you aren’t able to see the Gravity Form Styler widget.
Please check for the following conditions:
1. Make sure that you have the Ultimate Addons for Elementor version 1.1.0 or later installed on your website.
2. Check whether you have installed and activated the Gravity Form plugin.
3. Check whether you have enabled the Gravity Form Styler widget under the Ultimate Addons for Elementor widgets.
In case all of these are right and you still aren’t able to see the widget, please open up a ticket at our support center. We’ll be glad to help!