Thanks much for your answer.
(Done)
The program reports /etc/heyu/x10.conf not found or not readable!
(The file is there, heyu finds and uses it, but domus.link does not)
I find as advice:
First make sure permission's for the file are in fact correct, either by setting the file
owner/group to the webserver's user/group
But I do not know how to translate in to SME terms (what is the webserver's user/group)
Thank you