It sounds like you're setting your DHCP server up on the Instant Virtual Controller (VC), is this correct?
What DHCP server type have you currently set? You have used the word Local which should be OK. Local and Local,L3 set the VC to act as the DHCP server and Gateway. With Local, traffic is passed through the VC which performs Network Address Translation (NAT) - this probably isn't ideal if you want access to the wireless clients from the wired side.
With Local,L3 the VC will act more like a router but is more likely useful if you are using IPsec tunnels from the VC to another site or gateway/controller.
I would suggest you try Local,L2. The gateway can be configured as a device other than the VC - such as your router. With this mode it would be possible to have all wired and wireless clients in the same subnet. Some more information may be useful about the other subnets if that is not your goal.
Here is a useful resource which describes the different Local DHCP modes: https://www.arubanetworks.com/techdocs/Instant_86_WebHelp/Content/instant-ug/dhcp-conf/local-dhcp-sco.htm?Highlight=dhcp%20server
Another useful link: Configuring DHCP Scopes - Aruba Instant