Max Mega Menu not working

Hi all,

i’ve installed max mega menu plugin according to ‘getting started’ guide. It’s not working tough. I can change stuff but these changes do not appear in my menu. Is it necessary to implement a mega menu into a pages header? I’m planning to use this mega menu on only one single page, so it’s not in my pages header.

I’ve seen this page: https://www.megamenu.com/documentation/not-working-at-all/
Since i have zero experience in web programming it’s tough for me to understand.

I’m using Challeger Theme.

Help is highly appreciated!
Best regards!