Its an EUA upgrade and the notice simply failed. Note as a platinum you got the upgrade at the proper time.

The key to the puzzle is that its A9 and continues to be A9. If it were A8 and continued to be A8, it would be a real puzzle.

But in this case, there were probably, say, 13 FC seats remaining, and you got one of them, and now there are 12 remaining. It will show A9 (the most it will display) right through this.

The yield management system converted a seat for F for you, but so close to the time of upgrade, it probably wasn't visible on ITN for very long, if at all.