USA would only work if you have a US license.
Go here:
https://upgrade.graphisoft.com
to find out what kind of ED license is stored on your key. You should see something like the screenshot below for my license, showing that I have a USA version.
I would guess that yours says INT, but perhaps there is a POR or BRA version. If you see POR, e.g., try copying the folder and naming the copy POR. You will have to restart ArchiCAD to find out if it makes a difference.
One of the forum moderators
AC 28 USA and earlier • macOS Sonoma 14.7.1, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB