Menu hamburger disappear on click (mobile) and one line menu desktop

[kashco]

https://kashco-interiors.myshopify.com/?_ab=0&_fd=0&_sc=1

the 3 dotted lines it disappears upon click in mobile version which I don’t want. 

desktop: menu should be one line kindly. How can we fix this

Can someone help me fix this ? password: kashco

[kashco]

https://community.shopify.com/c/shopify-design/keep-menu-items-in-a-single-line-instead-of-two-lines...

I tried this but no luck. 

[kashco]

No your solution also doesn't help sir. Can I provide collaborative access just to fix this menu please.