That Microsoft username is being used by another freeCodeCamp account

Answer:
I had more than one email account with freecodecamp.org and the problem was that another account was already registered and needed to be unlinked before I could link the new account. I did not realize this as it was done months ago when I first heard about this site.

  • Note that freecodecamp chooses to treat a plus sign in a gmail email address as a literal email address (since that is how other email systems do it).

You may not need step 1 - since I forgot I registered; I needed it:

  1. I emailed for assistance listing the account I was having trouble with and other accounts that could be the problem.
    I received a response back that listed all of the registered accounts (3) matching the pattersn I sent them, along with each account’s GUID (or “guid-looking” identifiers). Those IDs can be seen from your profile.

  2. I had to log into each to find which account was registered.
    The registered account will have an UnLink button - the rest will only have a button to Link.

  3. I was able to link the desired account

Hope this helps someone.