Flow is also served(interconnected) with bizplay account. If you forgot your ID or password, you can find it on the following pages.
Find ID
https://www.bizplay.co.kr/comm_0022_01.act
Find password
https://www.bizplay.co.kr/comm_0023_01.act
If you signed up for flow through the flow’s website,
You can find it on the login page. Select 'Forgot your password?' under the login button and follow the process. (www.flow.team)