Anytime!
The root domain for you would be comprehensiveobgyn.net. It also sounds like there may have been a temporary server issue at the time you tried to create the campaign. You'll usually only see this message if we get a 5XX response from a sites server when we're trying to validate the address.
I just ran a quick curl and got a 200 ok. I was also able to set up a campaign ok on my end. Can you try to create the campaign one more time for me? If you run into another error, I'll forward this into support so we can take a deeper look at this for you.
Best,
Sam
Moz Helpster
