We are currently deploying a new user interface and navigational structure on our Community. These design changes align with our new Teradata Access portal and provide a more cohesive experience for our users.
It appears you said ".LOGON LOGON TDP1/,"? Use either .LOGON or LOGON but not both ;-)
Logging on from a mainframe without a username and password requires that your TDP have appropriate user exit(s) installed.
Also note that mainframe utilities use SYSTERM DD in a fashion similar to "stderr" on other platforms. (That's what the JES log is warning about.) Adding that DD will sometimes give you additional helpful diagnostic info.