X10WTI went bankrupt many years ago now.
Name on products stayed the same but a different owner and location.
The Servers did not ship well and got damaged.
To the new owners location and privacy issues. So no more registration servers.
That is one reason Tuicemen wrote his AHP Lifejacket.
The AHP software code. Was from many coders (some referred it to spaghetti code) with an ancient assembler. So it could not be easily updated to do things like kill the not registered warning screen.
Is it an X10 CM11A or the IBM Home Director controller?
Maybe a CP10 or CM10. Not clear in the IBM number.
Let us know if it is a IBM. I know the IBM does not have all the same set of features as the CM11A or CM15A.
Jeff has a great set of tutorials on X10 if you are not too familiar with X10 and some of its signal issues. That some run into.
https://jvde.us/x10-troubleshooting/