I am attempting to make a booking to Cape Town in April of next year into Traveler Plus, hopefully with upgrade to Club. Several of my (desirable) options lists Traveler Plus as not operating on this flight, and shows Traveler as the most appropriate alternative. Right.

The aircraft type is a 747, and I know of no configurations where Traveler Plus does not operate or where it may not be sold.

What exactly is going on here? Has it been sold out (in which case the wrong message is being displayed)? Or is there something sinister happening?