Originally Posted by grant2112

Just to be clear, you are booked in EVA fare class Y, B, or K, right? Otherwise you can't apply for a SAUA.

Seems like you are doing the right thing. As far as I think many of us have tried to ascertain, the "I" fare class means that both SAUA as well as an outright "purchase" of the biz class seat using miles is available. This is certainly what has been expressed to me by knowledgeable UA staff in the past.

You might be running into what others of us have recently run into as well: that EVA is marrying the segments of your ticket. Feels like when this happens, it might be impossible to apply SAUA to the TPAC segment. Of course, it could also be a UA IT error, but that's impossible to determine.

Since you weren't on the phone with UA when they spoke with EVA, I wouldn't necessarily take their response as gospel. Who knows how the situation was described, if there was a language barrier, etc.

Try to find out if your EVA ticket is married segments or not. If so, try to get EVA (not UA) to unmarry the segment. If you can get that done, then try the UA SAUA website again.

Good luck!