08-18-2019 05:58 AM - edited 08-18-2019 06:04 AM
The same SSID/password is fine and won't cause and issue. Is your WAN connection from ONT to main G1100 on MoCA? I'm thinking that might be the problem. I've done this when WAN connection was ethernet. If on MoCA the 2 G1100s might be fighting for the WAN IP address. Try also going Broadband Connection and set to Disabled to see if that helps.