If you got authentication issues with the GIT console, you can try to switch your configuration to HTTPS and specify user & password with the following command :

https://<username>:<password>@bitbucket.org/<username>/<repo>.git

But careful:

Coming back to this answer that I made a very long time ago, I want to give credits to @ChristopherPickslay for pointing out that the password is stored as clear text in the .git/config file.

If you want to roll with HTTPS, you can securely store your password with Git credential manager

But personnally, I now always use SSH authentification, as it seems to be a better practice, because you use a personal pair of public/private keys that will prevent your password to be stored outside. Apart from the fact you can put a passphrase on your key, and then you also need to store the password on a credential manager or ssh-agent.