I had the same issue. I don't normally commute and was surprised to find out that the southwest gate agents were totally useless. I was there an hour early, lots of seats open, left without me as I was desperately trying to search the same thing. Found myidtravel through employee res for listing as a nonrev (not a jumpseat) which was charging me $$$. I found a union note saying there is another Myidtravel site. I think I found it, but couldn't figure out how to log in or sign up or whatever.
Are you saying I needed to contact the union to get the log in? Not as intuitive as I would like