I had the exact same error and I was able to resolve it by right clicking on my service template and selecting change UUID and assigning the pool I had previously created.  This caused the warning to go away.

which debug are you doing? Debug ip icmp? remember debug ip packets doesn't always show everything especially when route-caching is enabled.

The configuration looks correct to route out to the wireless device. Since everything works with a cable router, I have to assume this is a routing problem with the wireless device, or you will need to replicate the NAT functionality the the cable r...