@Cursing Hi, would you draw a network map for us, so we can understand it more correctly? and how about try to enable DMZ for your PC? You can also follow this one for troubleshooting. Why virtual...

@human122 this model doesn't support management VLAN Do you mean you want different VLAN has different IP range? If so, you should refer to this FAQ and get a L2+/L3 Switch...

@Andrew71 V1 is the hardware version, not the firmware, and if the Controller is V3.2.14, the firmware or your EAP should be and you can also try to disable the firewall on PC for a test.

@Buckleau According to this FAQ, you have to set something(Multi-Nets NAT and Static Routing) on your Router to make other subnets have internet. How to build up a multi-nets network via Multi-Nets...

@leisefuxX It will work, as you said, they are under different DHCP servers and have different subnets, so old and new version controller won't affect each other.

@smallforward From the error information, it seems the device has an unstable connection and disconnected for some reason? Not quite sure, you may try to upgrade the EAP in standalone mode, forget it...