Does the TM13 itself switch on devicecode 1?
I also tested with an old TM12G/BNL, also works without a problem.
Even with one of my 2 EH" Transceivers.
Test your X10 installation could be done with an X10 RF-remote, if you have one.
Another option is to Reset Homey (tab Settings / System ) wait a couple of minutes before trying again.
