Hey there,
I tried looking into your setup.
The Wireless Router is using a DHCP scope that's not defined in the Router.
For example, your WRS2 was using DHCP scope of Network 172.17.40.x. This Network is not configured in your Router (Router on a Stick) and that's the reason you were not able to ping.
In your Router, you have only configured 3 VLANs 10, 30 and 88. Any VLAN other than this will not be routed.
Hope it made sense :)
Regards,
Harsha