@MaGiDeL I think the issue is that Omada is pretty simple, it expects 1 router - switch - APs - Meshed APs. I would be interested to see if making the SG2008P a dumb switch by temporarily unmanaging...

@MaGiDeL The ER707 has 7 ports, you are only using 1 for the WAN. I would relocate the ER707 to the physical centre of the 'star' configuration (where all cables terminate) and plug all switches...

@MaGiDeL Ok, I believe the issue is due to the stacked switch architecture and the fact that VLAN1 is always untagged. Any chance all 4 of your switches can just plug directly into the ER707...

@AKNetDude How is your backup WAN connection set up for LInk Detection? Removing the physical cable results in 'proper' detection, but default settings do not. So why?

@MaGiDeL Paste your network topology (Controller->Maps->Topology, click the Show Labels before taking the screen shot). I suspect you have stacked switches and you've managed to lockout the lower...

@hart13 Replace the SG1005P with an SG2008P (cheapest switch with 4 POE ports) so you can manage it as part of the Omada solution. I would replace the EAP650's with EAP225-Outdoors (or...