Account deactivated after signing up

Hello,

I just created a an account, but after this step I got an error message:

Your account has been disabled.
We're sorry. Your account has been flagged by our automated system for possible violation of our terms of service.

If this is an error, please contact Bitbucket Support to have it reinstated.

However I managed to activate my account and change some details thanks to the activation mail. But when I try to login, I still get the error message.

Any help? My acc is not SPAM.