I was using it in 2014-2015, and yeah I thought the UX was fine at that time. I did have the foresight to tie my account to my US Google Voice number (which has

I was using it in 2014-2015, and yeah I thought the UX was fine at that time. I did have the foresight to tie my account to my US Google Voice number (which has long been my primary number), so I didn't lose the account when I returned to the US and lost my KT phone number. I think that's what tripped up the other Americans who thought it was only an option in Korea.