Yes, I submitted attested copy by TU but WES did not accept it. I just got lucky today and was able to call customer service at WES and I was being told that lots of people from Nepal send documents directly from Nepal from TU. I wasn't sure how people are sending TU Controller of Examination certified transcripts directly to WES from TU. Does TU do this kind of service for students?
If anyone successfully did this then please please please let me know the process.