Can't scroll down in the navigation menu after making the header sticky (in mobile)

[Moana33]

Hello guys, I am using Mobile Menu app, and I made my header sticky on mobile.
The combining between these two things prevent me from sliding down in the navigation menu on the mobile verion.
Can someone help me please?

my web- https://merelybrand.com/?key=40742f8ba33c239c6ce59a8822aae6345e33e02c3e925bd55b60dbea249aaa04

[Moana33]

Can somebody help me please?

[Moana33]

Bump please

[Moana33]

Bump please

[Moana33]

Help please