Issue in mobile version with megamenu

Hi

The menu doesn't work in mobile version : eltia.eu/
Can you tell me what's wrong ?

Thanks for your help

Hi Gauthier,

Thanks for using our product,
Please give me your account of administrator via mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
I will check and feedback your issue in here.
Thank you so much for empathy

here it is
Login :XXXXX
pwd : XXXXX

HI Gauthier,

I'm sorry, I don't access your administrator with your account that gives me before
Please check it again. and Please give it via my mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Please don't enter them in here.
Thank you so much for empathy

I send you an email with all the details

Hi Gauthier
With position: menu, I fixed the problem when responsive mobile version but have other problem, Dropdown doesn't display.
I checked other position( footer) for mega menu and submenu still work fine,
Maybe the position( Menu) affect to our module and I still don't find the solution.

Ok, so what's your solution then ?