Yep. Sounds like you have a custom password problem. The password needs to be reset. You will need an authorized dealer to help reset this. They can call Allworx support to change this.
It can be done remotely and very quickly.

If this is not an option, then you have to do some detective work. Find out who maintained the system before you. They might give you the password.

8080 may be not be correct also. On 6xs, we had routinely changed that setting. You seem to be able to get in to the admin menue, so 8080 still seems to be valid (internally).

Is this an existing, installed system? Or is it a system bought on ebay ? Just curious.

The deal here, is to get a dealer on your side. You'll find that most dealers can really save you time if you let them help you out. Give me a call if you need to talk. 815-877-6423.