I had a number change go through, so I lost the above account.
I had to chat with a support agent to resolve the issue ("Chat with us" button at the bottom right of the dashboard). I think it wasn't working, because I submitted a phone number port at the same time I ordered the SIM, and they didn't give me a Vzn number in the mean time. I couldn't say for sure, though. The agent activated the line and got me a temporary number, and I'm good to go. I will say that, as my second line, the plan ordered should have been $35, but they took the full $50. Then the $35 was applied to the plan, and I have $15 left over to use next month. Not ideal, but it works, and the nightmare is over.