I recently purchased and set up the Deco AC1200 E4 with a Main connected directly the the router in my living room and a secondary unit connected in my office.

When I set the product up, I was able to instantly connect the secondary model in my office directly to my PC via ethernet. That night I went to sleep and when I woke up the secondary office model had 'disconnected' from the main. Upon rebooting and reconnecting I am now unable to connect the unit to my PC via ethernet.

I did not initially have any IPTV/LAN settings active when I was able to connect the Office Deco directly to my PC.

Is there a fix for this? and why did it disconnect overnight.

Thank you!