I tried to upgrade an ANA flight with Star Alliance Upgrade Awards. I filled out information the same correctly. I was able to confirm one of the segment a few days ago. I'm now keep having this issue. Does anyone have experience with it? Who can I report it to? This issue is like the web can't search ANA flight information. It doesn't show me the availability. I booked a LH flight and tried to upgrade it. I didn't have the same issue.

We cannot process your request.

We were unable to complete your request due to a technical problem. In the U.S. and Canada call 1-800-UNITED-1 (1-800-864-8331) within the U.S. or Canada, elsewhere use the local phone number.