"Camera not connected" error when trying to calibrate camera

So… tried laser for the first time, run through automatic setup on small screen, no focus possible, did update then it calibrated successfully, but then I turned on Luban and it was not possible to get background. I checked on small screen and camera is yellow while laser and enclosure are green. I tried to calibrate camera on small screen and it says camera is not connected.
Advice how to proceed.

likely you are connected via USB ? Camera only implemented via WIFI…

No. No cables. Only wifi.