There are two different admin passwords - one for console access and another for Web-interface.
If you know console password (or it is still default one) you could change web admin password on a console menu.
If console admin password lost then AFAIK there is no such procedure - you should contact ALU support for restoring that.
If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck.