I was running into some issues trying to pull up my AA award (using the JAL PNR). Just ORD-HND-HKG on JAL, no codeshare segments.

If I clicked the Manage booking link from https://www.jal.co.jp/jp/en/inter/change/ (one of the first links that come up when you Google), it never finds my reservation. But basically every other link (e.g. https://www.jal.co.jp/ar/en/ and https://www.jal.co.jp/jp/en/) works. This was especially confusing because it seems like all the links take you to the same page.