if you have a deco mesh system then you’re better off running the hub in modem mode, which disables pretty much all functionality other than terminating the cable connection and passing the public ip address through to your deco..
instructions for doing so below..
Log into the hub on http://192.168.0.1 and select the option to put the hub into modem mode
The hub will then reboot and come back up in modem mode - give it five minutes to settle down
Disconnect all ethernet cables from the hub
Power off the Hub and your router/mesh system
Connect your router/mesh system to the hub via ethernet cable and switch it on - leave it five minutes to settle down
Power on the hub and leave it five minutes to settle down
Should all be working.