@MartinS
The settings should be ok. You configured the EHEIM for a constant flow at 10% (Pump1).
If the filter returns from manual mode (per keys at the filter itself) and returns to automatic (suggesting: constant flow mode) the filter is responding to the commands of the EHEIM-Controller.
Unchecking the "An Eheim controller is connected" only stops the ProfiLux sending the flow info to the EHEIM-Controller.
The EHEIM-Controller send the current flow periodic to the filter and request the filter state. So if the EHEIM-Controller is connected and it got a flow info from ProfiLux the EHEIM-Controller send this flow to the filter.

I can't help with the LED codes. In this case EHEIM would know the answer, what the reason is or was.