One last attempt 
Is the hub at least attached to the router? (And hopefully a real ethernet hub, not another PC using internet sharing). And do you have anything else (like the laptop you are programming the UNO with?) to plug into that hub to confirm DHCP and internet access is available through it?
Did you follow this link, chose the correct options and install the Blynkblink sketch?
If so… then please post your properly formatted sketch.