Concerning the tooltip, we made some tests. It seems, as we thought, that this issue is related to a third party plugin.
To delete all the tooltip, please add the following snippet.

/**
* Delete the tooltip everywhere
*/
.tooltip {
   display:none
}

To add this code snippet to your site, we recommend that you paste it to the Custom CSS panel of your WordPress Customizer. Just go to your dashboard and navigate to “Appearance > Customize > Additional CSS”.
Pasting your code snippet there should do the trick for you.

Also, it’s important to remember that we share snippet only to solve issues with our theme. Any further request for CSS snippets will have to be part of a defect that needs to be fixed urgently. No snippets will be shared otherwise. If you want to go further, we advise that you require customization work.

Thank you for your understanding.