Sympathies. I too had a lot of trouble at first. Much of it turned out to be due to undocumented propagation delays inside the DH systems. Panel changes often fail to take effect in the time the Panel says, and until you know this, the effects can be very confusing.
I suggest you don't use that. I found parts of it just doesn't work (Support says it is due to be fixed-up) and it was much simpler to use the Panel's 'Email Addresses' page.
For what it's worth it is accessible here. What do you get from plain wylde.com ?