Multicolumn feature doesn't work for me

I don't understand the situation now ...
Can you help me? Is it worthy to wait?
Shall I keep the menu in this state?
/Unfortunatelly after doing the changes suggested now the menu is "unusuable"/

I would greatly appreciate your help

hereafter an extract of the css generated on your website :
I don't know which files you are modifying on which website but what I see is not good.

Now I can see it. A cache issue. Have you the cache activated on your website ??
I see the issue, the problem is that the ja-purity is very complex and has its own dropdown menu css which are not compatible with the one of maximenu.
Try a default maximenu theme to see if it works

In the plugins the "System-Cache" is turned off ...

But in the Tools > Clear Cache I found MaxiMenuCK cache or something like this.
So I cleared this from cache.

Default CSS module of MaximenuCK is working, but "not nice"
The long menu-titles are flowing out of the fixed-height "boxes" and are covering each other.

See for example the following menus:
Felszín alatti víz > Kézi vízszintmérő műszerek
Felszíni Víz > Mélység-integráló víz- és lebegtetett hordalék mintavevők
etc.

But also every other menus which are longer than 1 row, are "ugly"

Can the height of the menu "boxes" set to automatic depending from its content?

yes what happen now is that the theme set a height for the elements and as yours are very long they overflow on multiple line.
to fix this, go in the maximenuH_CK.PHP file located in the module and change the height properties to min-height :
Line 41 :


Line 128 :
and this should work