happy auction bot isn't made for simple Itemselling, as far as i understood it is mainly for sniping cheap items and reselling them by hand.
https://eu.battle.net/support/en/art...country-change
Updating Your Country of Residence
In order to change the country of residence on a qualifying Battle.net account, we will need:
A current government-issued photo ID with your new address and country displayed.
or
A current government-issued photo ID without your address and a copy of your most recent utility bill with your new address displayed.