[Hummingbird] Hummingbird Pro Setup Issue

I keep getting a message that states "The performance test didn't return any results. This probably means you're on a local website (which we can't scan) or something went wrong trying to access WPMU DEV. Try again and if this error continues to appear please open a ticket with our support heroes" thus the reason for this ticket. I have used this on several other websites on the same server without any issues. Let me know if you need any additional information from me.