The model is 6"x4". When I slice, I get the msg “model exceeds print area…” I reduce the scale 50% down to 20%, I still get the above messages.
That size should fit just fine unless it’s too tall…
The K1C build plate is 220 x 220 x 250 mm or 8.6 x 8.6 x 9.8 inches.
You also might have something else on the build plate preview that’s not supposed to be there…