Menu & Submenu is shown while loading

Hi Alexandr,

Just build a new site with the help of your plugin. Thanks for that.

I have 2 Q’s:
1. When the site loads I see the menu and submenu appear for a short moment. How can I prevent this from happening?
2. When I visit my site on my mobile there’s no menu shown at all. There’s something there but hidden and when I click the top right and the menu images are shown I can’t click any submenu items. How can I fix that?

Thanks on beforehand for your respons,
Marc

https://wordpress.org/plugins/menu-image/