I’m not sure I’m seeing it added to the site as shown here – https://share.getcloudapp.com/llu6mODg – there’s no submenu
As for the CLS: It seems mostly related a delay in script loading because of this script added to your site – https://share.getcloudapp.com/jkumr8ZX.
It’s delaying the rest of the assets, causing CLS.
If it’s manually added, can you try removing it?
If it’s not, can you try disabling some plugins and see if CLS improves? To know which one is adding it.