I've got FDC2214PROXSEN-EVM. It works, but there is some problem:
1. Red LED D1 "Low Bat" shines even with fresh battery (1.5V). DC/DC output is normal, about 3.25V
2. After a few Button1/Button2 touching Proximity LED could be on for a long time (from 4 sec to a tens minutes).
3. Proximity LED sometimes blink abruptly.
All tests was made in usual office enviroment, no RF or another disturbance sources (just usual PC/mobile phones surroundings)