Cart in menu

Hi, I discovered this new feature https://prnt.sc/3YDLPE5Vwn1D
but it won’t work for me. https://prnt.sc/wsmAYC2-QWHv
Can’t delete or add. Only the buttons are working.

Also, is this how it looks? The menu cart? I was expecting it to work together with this one https://prnt.sc/H0QRyy1OCj00

All i want is to place this https://prnt.sc/H0QRyy1OCj00
somewhere in the menu or keep it where it is without it floating all around the place. Make it static and give it a home. Is cart in menu a solution to this?
Right now, it is configured after Free Shipping bar https://prnt.sc/aw7WWMXpiPyd
and it floats like crazy.
Here: https://prnt.sc/JGfkFoco5Wy1

on the scroll: https://prnt.sc/QSMDjIRRpJIT

Same for mobiles.

Is there a way to fix this?