UPDATE: added a RHD version
Hyundai Kona's OBD2 / Fuse cover is, unfortunately, designed in a way that clashes with literally every OBD2 connector out there, because of the way its handle was designed.
This is a replacement printable cover with a simple, non-protruding cutout as the handle, that works with low-profile OBD2 connectors. It also has a hole on the side to enable routing the cable in a cleaner way. The handle is roughly aligned with the OBD connector, so you can see inside, but i'm not yet sure if a typical OBD2 BT adapter can fit through it - will probably create a new version when i get some time with one.
The cover is supposed to be printed with no supports, outer face down (the one with the text). The original cover is slightly curved along the vertical axis - after printing, heat the cover up with a hairdryer and bend it slightly to match the curvature. Don't overdo it, it will bend itself into shape when you stick it in the fusebox anyways.
The angles of the sides and the clips might seem weird, and like an error of some sort, but i assure you, they're not - the original cover is very awkwardly and obliquely designed, i just followed the lead.