I cannot add my SSH key to my account because of this: "Someone has already added that key as an access key to a repository."
I have checked all the places but this key is not associated to none of the repositories nor users I know of.
I have tried to SSH bitbucket.org, but is does not say any details:
ssh -T git@bitbucket.org
authenticated via ssh key.
You can use git to connect to Bitbucket. Shell access is disabled