I've created an instance on Google and changed the admin password with no problem.
Once I logged in the instance I clicked in
And I change the admin user password to another one.
If you don't have the email settings configured in Magento you will find this message when you change the admin password:
But the email password will be configured even if you see that message. I've tested that and I have been able to change the admin password.
By clicking in
All Users :
I have been able to create another user in the system.
If you still have problems with magento in order to change the admin password you can use the
bnconfig script to change it. To use this script:
sudo /opt/bitnami/apps/magento/bnconfig --userpassword YOURPASSWORD
Note: Take into account that you must change the YOURPASSWORD for your new admin password
Thank you for reporting this. We will update our guides and work on it.
And please, tell me if I can help you in any step or if I can help you in something more.