Same here. Can't get any international bookings to work, only domestic.
For a couple weeks I've tried flights ex-ICN and the website wasn't working for those, but working for other locations. Now everything. I wonder if TG realizes how many millions they lose by having an incompetent IT department. Seems they're in good company though. SQ messed up royally in their new booking engine earlier this year and still have problems. OZ is infamous for having one of the worst websites of any major airline. As the demand grows for IT services, more and more completely incompetent workers enter the field and unfortunately are finding their ways into major corporations.