This will not necessarily be the same username you use to login to TTLock. For example, if you initially signed up with an email address, then later added a phone number, the correct username will be your email address.
'''Cannot see the expected locks'''
The username you enter must be the top administrator account for the lock - most likely this will be the account that initially set up the lock.
= Disconnect=
Delete your username and password and set Synchronize to "disabled" to disconnect.