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 Register on BTCMEX? What's the Minimum Deposit on BTCMEX? About BTCMEX How to read the Order Book? Comments 0 comments Article is closed for comments.