So the Google Authenticator that GW2 has decided to use for additional account security updated last night and it has the nasty side effect of wiping out all stored keys (d’oh!). Now, I am setting up new keys for my accounts but when I got to GW2 I ran into a huge problem. It asks for two consecutive codes from the old sequence before it can be removed from the account. I have no way of getting these codes since they keys were wiped.
So, what do I and others in the same situation do to remove the old authenticator and add a new one? I can also see something like this happen if a phone was lost or stolen, so this won’t be a one-time action.