효성 ATM Step. 1 & 2 1. Confirm the ATM system in the upper left corner of the ATM home screen 2. Click "모바일/포인트 출금" Step. 3 Click "COATM" Step. 4 Click "앱출금" Step. 5 Click "다음화면" Step. 6 Enter your birthday (YYYYMMDD) and press "확인" Step. 7 Enter the one-time password (OTP) and press "확인" Step. 8 Confirm the withdrawal and click "확인" Step. 9 Confirm the amount and click "확인" Step. 10 Get cash