Yea.... this has taken way too long to fix.
Just click on account... change contact info..... change mailing address..... enter a city and country outside the U.S such as London, UK, W1J 7BJ
You can change it back as soon as you are done entering your tourneys... This is a little bit of a hassle and is probably against the rules but this has taken waaaaaay too long for WGT to fix.
Good Luck,
Speedy