How to check my UID? BTCMEX Support 28 February 2020 02:40 Updated Follow To check your User ID go to your "Account" on BTCMEX. 2. Click "Account information and security" to check the User ID. Related articles What are the Trading Fees on BTCMEX? How to become an Affiliate? What's KYC on BTCMEX? How to Register on BTCMEX? What is Perpetual Contract? BTCMEX Explained Comments 0 comments Article is closed for comments.