Sorry to hear about the problem you are having.
I visited your shared website but didn’t see any issue on it so could you please describe it a bit more in detail by sharing the screenshot so that I can help you?
Also, please make sure that you are using the latest version of the theme and plugins.
This can be due to plugin conflict on your site so please try temporarily deactivating all plugins except Unyson, Redux framework, and WpBakery page builder plugins and see whether everything works fine and then enable the plugins one by one to see which plugin is conflicting if any.
To confirm whether it is a theme issue, just temporarily use the Twenty Twenty theme on your site. If everything works fine then it’s the theme issue.