Hello,

this seems not to be an issue with the networking configuration. It could be related to the system setup.
Please open a support ticket and attach the backup file from GHL Control Center (Settings.par) and name the system configuration of your ProfiLux 3:
https://www.aquariumcomputer.com/sup...ets-enquiries/

EDIT: we received your mail in the support postbox and are reviewing, stay tuned.