Got it working, thanks for the instructions!
Just want to be sure that it is intentional that the secret_connection file contains all zeroes?
xxd /opt/tmkms/config/secret_connection.key
00000000: 0000 0000 0000 0000 0000 0000 0000 0000 …
00000010: 0000 0000 0000 0000 0000 0000 0000 0000 …
BR,
Martin