Moved from Eero to Omada Managed Switches, having issues

Hello,

Transitioned from Eero to Omada and am having some issues. Feel like I overlooked something in swapping out the Eeros.

Main Issues:

• Generally can't access FWG or is very slow to open, but before it was snappy
• Can't add Sonos at all (haven't set all the right settings in Omada yet but surprised I can't even add Sonos)
• Can see Hue Bridges but can't access them
• A few random devices seem to have IP addresses but can't be accessed

Topology Info:

• Old topology: Modem->FWG-Eero Gateway->Omada switch->other Eeros & switches
• New Topology: Modem->FWG->Omada switch->other Omada switches & APs. FWG is running an ISP network and LAN in DHCP. mDNS deflector is on.

Changes Made:

• Kept same SSID and password
• Removed all Eeros
• Enabled IGMP Proxy on FWG

Any ideas?