My new UM2 was "bent" as well right out of the transport box.
The height difference seems even larger, it's more like 4-5mm. The Transport box had no visible damage so the UM2 was obviously shipped in this state already. I can not imagine how it could ever pass QC like that.
I received the UM2 10 days ago. Since then i've contacted Support three times. Not a single reply so far. Very strange.