I have figured it out and you guys somehow messed up!
I could log into my account and the forums with no problem. I could not log into cpanel or webmail.
On the off chance that it might give me useful info I clicked the forgot password link on cpanel. That directed me to my account and forced me to enter a security challenge. Then I changed my password. Now I can log in.
Why is this your issue? Because all my passwords were the same before, as they are again. I don't know if it was the security question not being answered or the fact that you changed my password but this was a nuisance. An admission that passwords had been lost, or needed to be changed after the move would have saved both of our time dealing with this.
And no, I didn't forget my password. I have been using the same mnemonic password (or some known variation) for all of my computer accounts for over 15 years now. Very hard to hack and impossible to forget.