Hi there,

Thanks for contacting us and hope you are doing well and having a great day.

To rule out the possibility of a plugin or theme conflict, please deactivate all your plugins (besides Elementor and Elementor Pro). If it solves the issue reactivate them one by one to find the culprit. If it didn’t help, switch your theme (temporarily) to a default WP theme such as Twenty Nineteen and see if it makes any difference.

Also, this could happen due to our Elementor performance experiments you can try to deactivate them. To deactivate them you can go to Elementor > settings > features

Performance features currently in the experimental stage are:

• Improved CSS Loading – An experiment that only loads the CSS of widgets on a page once, in order to prevent multiple requests to the server. With this experiment, CSS files are loaded as inline style tags.
• Inline Font Icons – This experiment renders icons as SVGs without loading the Font-Awesome and eicons libraries. Since SVGs are vector-based images which are rendered using the browser’s engine, they do not increase server requests which improves performance

If this does not help you can you our roll back version feature and roll back to a version where you menu is worked fine – https://elementor.com/help/rolling-back-to-a-previous-version-of-elementor/

I am looking forward to hearing back from you soon.

Kind regards,

Hello, Yes its possible that something within that plugin is conflicting with elementor, especially if deactivating the plugin corrects the issue. You may want to use a different plugin to replace that one.
We are unable to give suggestions for 3rd party plugins, but elementor pro does have a built in form that has the functionality you need.