If you have an appliance with an LCD screen, Factory Reset is #1 on the config menu.
You can try this as well, just to get back into WebAdmin:
Reset only Webadmin admin account password
To change only the webadmin default admin account password from ssh with root access or console directly connected to the ASG run the following:
1) Type ‘cc’
2) Type 'RAW'
3) Type ‘system_password_reset'
On next webadmin access the system will prompt for a new password to be entered for admin account.
There's a couple of articles in the knowledgebase (www.astaro.com/kb
) that give instructions for how to do factory resets on smaller appliances without LCD or capability to hook up a monitor. They are labelled as being for 7.x, but the same process should still work.
If all else fails, since you seem willing to do a factory reset, just reinstall from ISO (make certain to use one with ssi in the name, it is for appliances).