SlickNav not working/appearing

Hello.
Right now I’m using version 1.3.1 of your theme.

I’ve noticed that when I zoom in I not able to see the slicknav menu for the mobiles.

I started with the version 1.2.5 (I think) and I could see the slicknav menu just fine.

I’ve done a bit of messsing around with the css so it’s possible I might’ve deleted something I wasn’t supposed to.

Can you help me out? In the preview page of the current version the menu is all messed up and when I zoom in I can’t see the slicknav so maybe it was the update?