you are correct. Also https://www.id90travel.com/ for id90 fares for certain other carriers like alaska, frontier, sun country, hawaiian and a few more. Unfortunately not all the carriers listed on myidtravel/myidtravel are eligible for us to get zed/id90 fares on. This includes American Airlines. I wish we had at least one of the three big Legacy carriers to use. Now that we no longer have United it really gets rid of a lot of options.