Ssdh password for user?

some time ago I discovered simpleSSHD. Fine idea to control the phone.
Using a port number greater than 1024 gave me connection, but I could not find a correct password.
In termux I set a password using passwd, but even after a cold start of the phone this password was not accepted.
What is going wrong?

rtfm. sorry, everything can be read, if you know, where
app creates password on the screen when connection is established