"USER AUTHENTICATION FAILED" Error AVA

Are you sure it's a hardware issue? How if you try to get in from another home PC, even on this one does not work? In my case I found that if I reset my Router / Modem I can log in both the site and enter the game. But this only works for 5 minutes, because I have a public and static IP, and after the reset is assigned a new IP for 5 minutes, different from the one normally owned. I've been banned in June, and I do not know if they have changed something. I recently changed the video card and reinstalled all the PC from scratch with Win 10. It does not work the same. If I try at friends' house I can play. What do you think about it?

5 minutes it works but... If I logged in EnMasse's site, until i dont exit i can do anything I want on the site, profile, forum etc ... If I start A.v.A. and I log in, I can stay / play A.v.A. for 5 minutes, but after five minutes I get the XIGNCODE HACK MESSAGE. As i said, I have a public and static IP, and after the reset is assigned a new IP for 5 minutes (public and dynamic), different from the one normally owned

With the same account that you try on your machine? YES! With the same account that I try on my machine (main, Lieutenant Colonel Lv 3).
I have two disks, one SSD, where I installed A.v.A. and the operating system Win 10 (and other things), and one empty HDD. So you think they blacklisted my SSD Serial Number? Can I change the hard disk serial number? If yes, how?

But then why I can not play A.v.A. from another home PC with the same connection? They blacklisted all the hard disks on the same internet connection?
Thank you

Sorry I was wrong, now no XIGNCODE ERROR HACK MESSAGE appears, maybe because I reinstalled the PC with Win 10, I had win 7. If I remember correctly the error code was 0xE019100B. Sorry, I've tried all this two months ago.

Today I tried after I reset the modem / router to get in A.v.A., for 5 minutes I can stay in, but when I go back to the old IP i get "Lost connection to server'', and after this, if i try to restart ava from launcher i get "User Authentication Failed". Now A.v.A. is installed on an external USB, not on my SDD.

To confirm, today I played with the same account on whic Im "blocked'' on my machine, at my cousin's home, and I had no problem.

What do you think is the problem now?

I had tried whit TMAC v6 program, but it did not work, or maybe I did not do the steps well ahahahah. Maybe changing Internet Provider can work, whit new IP, but you would have to pay for a new subscription.

Or is there an alternative solution? Thank you and sorry for my bad english ahahah.

If your problem is "Lost connection to server" from your modem/router reverting back to its old IP address, try using a VPN.

If I use a VPN En Masse can perma ban my account? Is it allowed to use VPN?
Well anyway I was wondering if there is a way to fix this block without using VPN or changing Internet Provider for have a new IP.

help !?

Speaking from experiences, En Masse will not ban your account for using a VPN. What I usually do is use a VPN to log into the launcher and then disconnect from the VPN afterwards.