The banned my MAC address saying that i had hacked through it. It was the Xigncode that stopped it working and not Aeria.
If you get this just google TMAC V6 for the MAC address changer. Get a copy of the original downloaded Xigncode File and replace the existing file (or even re-install..... i got 100mb Virgin fibre so is quick, so it could take a few hours for you). Run TMACV6 and change your MAC addresss using th 02 ticked box. And away you go again.
It must be, or is for sure (i'm not that clever) a sub file that stops you using your MAC address that is hidden in the files or process. Whether these download again after re-installing AVA...... I don't know as i just use the MAC app all the time now!