The plastic draught/sealing strip underneath the front door of my UK flat (a non-external door to the common hallway) has become partly detached due to having mail pushed under it – photo below.
I'm not sure if this strip was originally glued or just tucked into a recess in the door (which, for what it's worth, was new in 2015), but I would like to know how I would go about reattaching it, and in particular whether it's possible to do so without removing the door from its hinges.