How to re-establish Direct Link connection between CAD software and UE5?

Hi,
I’m starting out with UE5 for ArchViz, but can not figure out how to re-establish the direct link connection with Archicad after I finish the first work session. Everything works fine until I quit both softwares and I re-open the projects in Archicad and UE5, at this point they do not seem to remember the previous connection. Could someone please point out what I am missing?
Thank you.