Originally Posted by
KDCAflyer
They go unused and expire. Sadly you can't even use them to bring guests in if you hold an Amex Platinum.
This has been my exact experience as well. I have tried at PHX, LAX and DTW. Some SkyClub agents were nicer about it than others but the outcome was the same. And this was before the current overcrowding issues. So even less likely to get a sympathetic agent now.
It is highly illogical imo, since the companion passes can still be used. And furthermore they extended everything else due to covid.