I no longer have the navigation option in the online store section

[rakken]

Hello,

I no longer have the navigation option in the online store section:

I also have a problem on my website, when I go to the menu, the page disappears when I try to go to the mega menu (red recrangle).

Please help

[Webstablish]

@rakken , for the first issue: it has been moved to Admin > Content > Menus