menu fully unresponsive

Hey guys, having a somewhat major issue (might be an easy fix), but I am awful at this deeper website building ‘stuff’. Anyways, all was fine until I guess a week ago because my website was completely fine, all of a sudden on desktop and mobile, hovering over the menu button it fully does not respond or proceed to reveal menu as would a normal hover.

I have tried to troubleshoot as much as I can think of and so far, and I restored my website to a previous backup dated March 2024, which did actually work, but shortly after the mega menu returned to its unresponsive state. Mega menu also had auto-updates on, perhaps there was recent update that is having a conflict with another plugin? I’m not sure, but below I have a CCS code a kind user was able to give me, that fixed a menu bug I had been running into. I will post it below alongside plugins. As well as this, I currently have an error code on my homepage I cannot figure out.

Error code:

/homepages/46/d4297414966/htdocs/wordpress/wp-content is write-able. When finished installing the plugin, change the permissions back to the default: chmod 755 /homepages/46/d4297414966/htdocs/wordpress/wp-content. Permissions are currently 777.

CCS Code:

.site-navigation,
.site-navigation-toggle-holder {
display: none !important;
}
.site-navigation-dropdown {
transform: none !important;
}

Plugins installed; Elementor, Image Optimizer by Elementor – Compress…, IONOS Journey, IONOS Login, IONOS Performance, IONOS Security, Jetpack, Max Mega Menu, Performance Lab, Site Kit by Google, UpdraftPlus, W3 Total Cache, Yoast SEO

ANY help at all would be greatly appreciated, many thanks.

Luke

The page I need help with: [log in to see the link]