Even though you get no dial tone now, I think in the end the ALG setting should be unchecked. Do your logs indicate what is happening? Do they show packets being blocked or dropped? When you go to VPanel, does your device show as being registered?

Sometimes you have to wait a little while until things clear -- e.g., there may be some bad addresses cached in the servers or the router. I'm sure Support will be able to fix you up, particularly if they can look at the adapter logs. It's just too bad this had to happen on the weekend.