Can someone post with the exact click-by-click instruction for cancelling an upgrade request online?

I had placed an upgrade request a few months earlier when they announced some special upgrade promo for non-upgradeable class. I want to cancel it and the help says that international upgrade requests are to be cancelled online but no matter where I've looked I cannot find this cancel link.

I've checked the upgrade request page but this only says "upgrade requested" and managing my booking says something similar, just different formatting.

Help??