Hi Ricardo,
All good troubleshooting advice above too, thx Community! Please try
plugging your PC-no-Wifi to your 2nd R710 (Master Unleashed AP) and
you should pull DHCP from the Router if configured and working correctly.
Do you have clients connecting to your Unleashed WLANs and pulling IP
ok too? If so, they should also get IPs if they are close to/connecting to
your Mesh AP as well (just like a directely connected PC on 2nd Eth port).
For further testing, can you take your R500 to your R710, and connect it
directly to the R710 2nd Eth port? This should "daisy-chain" your R500 AP,
but with wired link back to the Router/DHCP/Def-gw.
Standing close, does a wireless client on Unleashed WLAN off the R500
get IP ok? If so, how about your PC if you plug into 2nd Eth port and disable
WiFi? Looking forward to your results. Thanks and best regards.