you wrote
Okay, I ran ipconfig on the office laptop computer
only to avoid confusion and misunderstandings: this is the computer we are talking about here? Otherwise the IP settings are not interesting.

you have 2 different IP ranges: 192.168.1.x and 192.168.2.x, depending on the netwrok adapter you are using. Which adapter is used for connecting to ProfiLux? This adapter determines which IP ProfiLux must have.

To be honest, I still don`t understand your home network. Is there a router? How is what computer connected to it?

Maybe a detailled description or even a drawing would help, at the moment I am a little lost.

And you didn't answer my question
are you able to access your router and check the settings in it? what is the IP address of your router?