BF6 Battle Royale "visit unique stashs"

Finding the unique stashs when you know you have to look for the green smoke is fairly simple. 

Opening them the sledgehammer is working for me. Apparently you can also open them via a key comand. I see the white dot at the door but my general open-key "e" seems not to be working. When I move the mouse (I play on PC) to look over the door I do not get any key-suggestion-help info.

My best guess is, I have changed the key-settings unassigning the respective key. Can anybody please advise what line (I assume in the key settings when on foot!) needs to be assigned.

Thanks in advance.