Anyone else noticed that the phone does not sit under the lip its designed to? which puts the charger and headphone jack holes out of alinement?
Try bending it. A lot. Like try patiently for five days.
This does seem to be a common problem (Fairphone case problems). My own case hasn’t arrived yet, but from what everyone’s saying on here you really do have to bend it repeatedly over a longer period of time until it fits better.