How to check my UID? BTCMEX Support 25 November 2020 23:40 Updated Follow To check your User ID go to your "Identity information" in the drop-down menu on the top right corner of BTCMEX. 2. Click "Account information and security" to check your User ID. Related articles What are the Trading Fees on BTCMEX? How to Register on BTCMEX? How to become an Affiliate? What's KYC on BTCMEX? What is Perpetual Contract? BTCMEX Explained Comments 0 comments Article is closed for comments.