I needed to reflash so I'm back to trying this again.

Is there supposed to be a 1 before your number?
Username: GV[insert your number here]@gvgw1.simonics.com
Username: GV[insert your number here] or Username (ex.GV1234567891)

So actually it would be something like GV11234567891?

Anyway, it's saying that my SIP account is Connected, however, when I try to dial anything, it rings for just a second, and I get the message Unable to establish a connection.

I've tripled checked all of my settings.

I really don't see what could be wrong on my end.